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X-WR-CALNAME:Stewart Blusson Quantum Matter Institute
X-ORIGINAL-URL:https://qmi.miffanytark.com
X-WR-CALDESC:Events for Stewart Blusson Quantum Matter Institute
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DTSTART;TZID=America/Vancouver:20221004T120000
DTEND;TZID=America/Vancouver:20221004T130000
DTSTAMP:20221003T182524Z
CREATED:20221003T182524Z
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SUMMARY:Dr. Sebastian Paeckel: Tensor network methods for open electron-phonon systems: Bipolarons in the presence of dissipation
DESCRIPTION:Dr. Sebastian Paeckel: Dr. Sebastian Paeckel is from LMU Germany and is one of the world leading experts in Tensor Network methods. \nTitle: Tensor network methods for open electron-phonon systems: Bipolarons in the presence of dissipation \nAbstract: Studying the interplay between electrons and phonons recently has seen a remarkable revival\, driven by both methodical progress\, as well as fascinating new physical insights\, such as the possibility of light-bipolaron induced superconductivity [1\,2] or the enhancement of transport properties [3]. Here\, investigating the effects of environments (dissipative\, thermal\, driven) coupled to the phonon system is a crucial but enormously challenging problem\, which on the one hand is important to understand the validity of effective\, isolated models\, while on the other hand allows for tailored manipulations of the phononic state. Recently\, we developed a new toolbox of tensor network methods which are designed to allow an efficient treatment of electron-phonon systems in- and out-of equilibrium as well as coupled to an environment. Exhibiting a speed-up of significantly more than an order of magnitude\, we are able to implement open quantum system techniques\, which previously had been way too expensive to be of proper use for studying large system sizes by means of tensor network methods.\nIn this talk I introduce the developed tools and give a brief overview of the current state\, their potential and limitations. Furthermore\, I discuss a first application\, namely the effect of a dissipative environment\, coupled to the Hubbard-Holstein model\, putting the emphasis on a previously reported enhancement of the metallic phase.\n[1]  Phys. Rev. Lett. 121\, 247001 (2021)\n[2]  https://doi.org/10.48550/arXiv.2203.07380\n[3] Scientific Reports volume 7\, 3774 (2017) \nShort Bio: Sebastian did his PhD in Göttingen from 2015-2019 focussing on the development Matrix Product States (MPS) methods\, in particular time evolution methods. In 2019 he had an internship at Microsoft Station Q iand studied transport through Majorana Islands. In 2020\, he became a Junior Researcher Leader in LMU in Munich and started studying electron phonon systems (method development and application\, also to quantum chemistry problems).
URL:https://qmi.miffanytark.com/event/dr-sebastian-paeckel-tensor-network-methods-for-open-electron-phonon-systems-bipolarons-in-the-presence-of-dissipation/
CATEGORIES:Other seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220929T100000
DTEND;TZID=America/Vancouver:20220929T110000
DTSTAMP:20220921T164849Z
CREATED:20220921T164849Z
LAST-MODIFIED:20220921T164849Z
UID:4927-1664445600-1664449200@qmi.miffanytark.com
SUMMARY:CM Seminar: Dr. Tina Rost\, High Entropy Ceramics: Investigating localized structural effects on emerging properties
DESCRIPTION:Speaker: Dr. Tina Rost \nDate: Thursday September 29 2022 \nTime: 10:00 am – 11:00 AM PST \nLocation: Zoom \nZoom Link: https://ubc.zoom.us/j/64243489212?pwd=YkFSMDdxN3Nhbm15aExBdTF6MnBvQT09 \nMeeting ID: 642 4348 9212 \nPasscode: 742838 \n  \nAbstract\nMany properties we observe in materials are a direct consequence of their composition and local structure. High entropy materials are a unique class of systems that do not have a primary composition; rather they contain a near-equimolar distribution of several elements— where no single element serves as host. Such compositional disorder is accompanied by a unique distribution of localized structural distortions that can have a profound effect on properties such as thermal conductivity\, magnetic interaction\, diffusion\, and more. To date\, high entropy metals and ceramics are gaining significant traction in the materials community as unique and interesting properties continue to emerge\, from amorphous-like thermal conductivities to exotic magnetic states. In this talk\, we present and discuss ongoing work on the local characterization of several high entropy compositions exhibiting crystal structures from rocksalts to Kagome lattices. In particular\, the use of X-ray absorption fine structure (XAFS) is demonstrated to aid in understanding such disorder on the local level and how it may influence functional properties \n  \nSpeaker Bio\nDr. Christina Rost is currently an Assistant Professor of Physics at James Madison University in Harrisonburg\, VA. She graduated with a Ph.D. in Materials Science and Engineering from North Carolina State University in 2016\, following both a B.S. and an M.S. in Physics from Indiana University of Pennsylvania. Her Ph.D. focused on the development and phase-characterization of a novel class of oxide systems stabilized through configurational disorder\, named “Entropy Stabilized Oxides”.   After graduation\, Tina was Postdoctoral Research Associate in the Experiments and Simulations in Thermal Engineering (ExSITE) group\, within the Department of Mechanical and Aerospace Engineering at the University of Virginia. There\, her work focused on experimental methods to test thermal properties at extremely high temperatures and thermal transport in complex and high-entropy oxides and carbides. Currently\, her all-undergraduate research group at JMU focuses efforts on complex oxide synthesis and characterization. She is an active member of the American Ceramics Society and the American Physical Society.
URL:https://qmi.miffanytark.com/event/cm-seminar-high-entropy-ceramics-investigating-localized-structural-effects-on-emerging-properties/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220929T090000
DTEND;TZID=America/Vancouver:20220929T133000
DTSTAMP:20220920T234912Z
CREATED:20220920T234912Z
LAST-MODIFIED:20220920T234912Z
UID:4919-1664442000-1664458200@qmi.miffanytark.com
SUMMARY:Synergy Day 2022
DESCRIPTION:AMPEL Synergy Day 2022\nDate: Thursday\, September 29th \nTime: 9:00 am – 2:00 pm. \nLocation: Room 2020 Kaiser Building\, 2332 Main Mall \nRegistration is open to AMPEL and SBQMI members. \nFood will be provided by the Burgurholic food truck (https://burgerholic.ca/food-truck-menu) serving a variety of meat and vegetarian burgers. \nProgram\nOpening \n8:50 – 9:00: Coffee \n9:00 – 9:10: John’s Welcome \nNew Faculty Research Presentations and Synergy Lectures \n9:10 – 9:30: Drew Potter \n9:30 – 10:00: Synergy Lecture\, Lukas Chrostowski \n10:00 – 10:15: Break \n10:15 – 10:35: Ben Britton \n10:35 – 10:45: Safety First \n10:45 – 11:00: Shared Facilities: Nanofab and CFET \n11:00 – 11:20: Sergey Kravchenko \n11:20 – 11:45: Dan Bizzotto  Synergy 2 \n11:45 – 12:05: Joe Salfi Group \n12:10 – 1:30: Lunch (provided) \n1:20 – 2:00: Closing
URL:https://qmi.miffanytark.com/event/synergy-day/
CATEGORIES:UBC event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220922T100000
DTEND;TZID=America/Vancouver:20220922T110000
DTSTAMP:20220907T224728Z
CREATED:20220907T224728Z
LAST-MODIFIED:20220907T224728Z
UID:4864-1663840800-1663844400@qmi.miffanytark.com
SUMMARY:Dr. Guosong Hong: Seeing the Sound: Optical and Ultrasonic Brain Interfaces Based on Materials Advances
DESCRIPTION:Dr. Guosong Hong – Stanford University  \nTitle: Seeing the Sound: Optical and Ultrasonic Brain Interfaces Based on Materials Advances \nAbstract: Today’s optical neuromodulation and imaging methods enable causal manipulation of neural activity to dissect complex circuit connections underlying certain behaviors and facilitate brain-computer interfaces. In these approaches\, visible light is commonly used\, thus limiting penetration depth in vivo and necessitating an invasive procedure that damages the endogenous brain tissue and constrains the subject’s free behavior. In this talk\, I will present three recently developed methods to address these challenges based on novel material advances: sono-optogenetics\, infrared optogenetics\, and an intravascular light source. In sono-optogenetics\, we demonstrate that mechanoluminescent materials can convert focused ultrasound into localized light emission for noninvasive optogenetic neuromodulation in live mice. In addition\, inspired by the infrared sensitivity of rattlesnakes\, we developed an approach to use brain-penetrant infrared light for tether-free and implant-free neuromodulation throughout the entire brain in freely behaving mice. Lastly\, we leveraged a biomineral-inspired approach to synthesize nanoscopic phosphors as an intravascular light source. In contrast to conventional external light sources\, this intravascular light source offers deeper tissue penetration for imaging the mouse brain through the uncleared skull. I will conclude my talk by presenting an outlook on how advances in condensed matter may facilitate our understanding of the mind. \nBiography: Dr. Guosong Hong received his Ph.D. in chemistry from Stanford University in 2014 and then carried out postdoctoral studies with at Harvard University. Dr. Hong joined Stanford Materials Science and Engineering and Neurosciences Institute as an assistant professor in September 2018. His research at Stanford aims to develop and apply novel optical and electronic materials for minimally invasive brain interfacing. He is a recipient of the NIH Pathway to Independence (K99/R00) Award\, the MIT Technology Review ‘35 Innovators Under 35’ Award\, the Science PINS Prize for Neuromodulation\, the NSF CAREER Award\, the Walter J. Gores Award for Excellence in Teaching\, and the Rita Allen Foundation Scholars Award.
URL:https://qmi.miffanytark.com/event/dr-guosong-hong-seeing-the-sound-optical-and-ultrasonic-brain-interfaces-based-on-materials-advances/
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220915T100000
DTEND;TZID=America/Vancouver:20220915T110000
DTSTAMP:20220907T210229Z
CREATED:20220907T210229Z
LAST-MODIFIED:20220907T210229Z
UID:4860-1663236000-1663239600@qmi.miffanytark.com
SUMMARY:Sabrina Leslie: Single-molecule microscopy of RNA-lipid-nanoparticles: Bringing the nanoscale physics to help advance nanomedicines
DESCRIPTION:Sabrina Leslie: Associate Professor\, UBC Department of Physics and Astronomy and Michael Smith Labs \nAffiliate Faculty member\, SBME\, GSAT\, BIONF \nAbstract: I will present a unique quantitative single-particle imaging platform called CLiC (Convex Lens-induced Confinement) which enables simultaneous measurements of the size\, mRNA-payload\, and dynamic properties of vaccine and other nanoparticles in controlled\, cell-like conditions (Kamanzi et al\, ACS Nano 2021). Recently relocated to UBC PHAS and MSL from McGill in 2021\, our nanoparticle imaging team innovates nanoscale devices and approaches to investigate the structure-activity relationships which can help characterize and understand emerging classes of mRNA-lipid-nanoparticles such as COVID19 vaccines. We image individual confined\, freely diffusing particles in solution as well as during reagent-exchange\, such as in response to a change in solution pH\, in order to emulate/explore intracellular dynamics in a controlled setting. Over the long term and in collaboration with health/therapeutic scientists\, we are working towards correlating detailed multi-scale data sets\, including single-particle measurements made in vitro as well as in cells and tissues\, with clinical results\, to create a through-line of understanding of vaccine/drug effectiveness from the microscopic to clinical scale. Our inspiration is to innovate and use nanoscale tools to obtain new biophysical insights into how and why medicines work to enable and optimize their rational design and engineering. This talk builds off our recent publication in ACS Nano (Kamanzi et al\, 2021)\, describes our ongoing collaboration with the Cullis laboratory and others (UBC Health Sciences)\, and shares an outlook including opportunities for new PHAS and interdisciplinary graduate students at UBC looking to join an exciting interdisciplinary team of biophysicists. The Leslie Lab has recently set up its new laboratory at MSL/NCE with several state-of-the-art microscopes and we are excited to share our work with QMI and get to know our new community through and after this seminar. \n \nCaption: CLiC single-particle imaging and analysis of Lipid Nanoparticles (LNPs) enables characterization of detailed size and loading distributions of RNA–LNP complexes. A) Compressing the flow-cell confines LNPs for extended study. B) Trapped LNPs are shown in microwells. 100s – 1000s of isolated LNPs are imaged in parallel\, a process which can be repeated thousands of times. C) Single-particle tracking is used to obtain LNP trajectories\, which are then used to obtain particle diffusivity/ size (D) as well as intensity/RNA payload (E). This information is then used to define LNP size and RNA payload distributions and inform structure-activity relationships of the nanoparticles in conjunction with other dynamic\, multi-scale and biological data.
URL:https://qmi.miffanytark.com/event/sabrina-leslie-single-molecule-microscopy-of-rna-lipid-nanoparticles-bringing-the-nanoscale-physics-to-help-advance-nanomedicines/
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220517T100000
DTEND;TZID=America/Vancouver:20220517T110000
DTSTAMP:20211102T210308Z
CREATED:20211102T210308Z
LAST-MODIFIED:20211102T210308Z
UID:3552-1652781600-1652785200@qmi.miffanytark.com
SUMMARY:Careers in Academia
DESCRIPTION:Speakers:\n  \nJorge Quintanilla \n\nUniversity of Kent\n\nFazel Tafti \n\nBoston College\n\nMaxime Dion \n\nQC Developer\,  Université de Sherbrooke
URL:https://qmi.miffanytark.com/event/careers-in-academia-2/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220419T140000
DTEND;TZID=America/Vancouver:20220419T170000
DTSTAMP:20211101T210823Z
CREATED:20211101T210823Z
LAST-MODIFIED:20211101T210823Z
UID:3547-1650376800-1650387600@qmi.miffanytark.com
SUMMARY:Careers in Industry
DESCRIPTION:Hamed Taheri\, \n\nRobust Choice Cloud Solutions Inc.\n\n  \nSarah D’Ettorre \n\nMicrosoft\n\nYony Bresler
URL:https://qmi.miffanytark.com/event/careers-in-industry-2/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220407T100000
DTEND;TZID=America/Vancouver:20220407T110000
DTSTAMP:20220330T201042Z
CREATED:20220330T201042Z
LAST-MODIFIED:20220330T201042Z
UID:4248-1649325600-1649329200@qmi.miffanytark.com
SUMMARY:Dr. Valentino R. Cooper: Exploring the Chemical Landscape of High Entropy Oxides
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Dr. Valentino R. Cooper \nTitle: Exploring the Chemical Landscape of High Entropy Oxides \nAbstract: High entropy\, multi-component metal alloys (HEA)\, have superior mechanical properties and high radiation tolerances; which are\, in part\, driven by configurational entropy. Recently\, an oxide analogue comprised of MgO\, CoO\, NiO\, CuO and ZnO was synthesized; exhibiting a truly entropy-stabilized\, reversible phase transition from a multiphase material to a single rock salt-ordered phase above 850-900°C. This entropy-driven stabilization may engender many unique properties\, such as high melting temperatures\, radiation resistance and other anomalous responses. Here\, we discuss a design strategy for the prediction of synthesizable disordered oxides. Our effort employs first principles studies of 2-component oxides to develop design rules based on the relationship between pairwise enthalpies of formation\, DH\, and configurational entropy of the disordered material. A similar chemical identity-to-DH map was previously explored using the class of high entropy alloys\, where the stability of multicomponent metal alloys was correlated to the enthalpy of mixing of binary and ternary compounds. \nIn this presentation\, I will focus on our recent efforts to employ this local enthalpy map as an effective strategy for the discovery of new classes of entropy stabilized oxides. In particular\, we are able to use our first principles calculations with Monte Carlo simulations in order to build chemical bonding maps to study the local environment preferences that determine whether a material will phase segregate\, to form a single phase with clustered regions\, or form a disordered solid solution. This enables us to identify compounds that may be synthesizable or could be stabilized by entropy – thus allowing for more reliable materials discovery and design. \nThis work was supported by the U.S. D.O.E.\, Office of Science\, BES\, MSED (first principles calculations) and the LDRD Program of ORNL (simulations)\, managed by UT-Battelle\, LLC\, for the U. S. DOE using resources at NERSC and OLCF. \nBio: \n \nDr. Valentino R. Cooper is the Section Head for the Materials Theory Modeling and Simulations section in the Materials Sciences and Technology Division at Oak Ridge National Laboratory. He received his Ph. D from the Chemistry Department at the University of Pennsylvania in 2005. Prior to joining ORNL in 2008\, he was a post-doctoral associate in the Physics Department of Rutgers University. His research focuses on electronic structure methods for understanding dispersion interactions and in the prediction of functional materials including piezoelectrics and ferroelectrics. Dr. Cooper is a 2013 recipient of the Department of Energy Early Career award.
URL:https://qmi.miffanytark.com/event/dr-valentino-r-cooper-exploring-the-chemical-landscape-of-high-entropy-oxides/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220331T100000
DTEND;TZID=America/Vancouver:20220331T110000
DTSTAMP:20220323T181708Z
CREATED:20220323T181708Z
LAST-MODIFIED:20220323T181708Z
UID:4194-1648720800-1648724400@qmi.miffanytark.com
SUMMARY:Kwabena Bediako: New Twists on Chemistry and Physics in Moiré Superlattices
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Kwabena Bediako\, Assistant Professor at UC Berkeley\, Dept. of Chemistry \nTitle: New twists on chemistry and physics in moiré superlattices     \nAbstract: Atomically thin or two-dimensional (2D) materials can be assembled into bespoke heterostructures to produce some extraordinary physical phenomena. Likewise\, these highly tunable materials are useful platforms for exploring fundamental questions of interfacial chemical/electrochemical reactivity. One exciting and relatively recent example is the formation of moiré superlattices from azimuthally misoriented (twisted) layers. These moiré superlattices result in flat bands that lead to an array of correlated electronic phases. However\, in these systems\, complex strain relaxation can also strongly influence the fragile electronic states of the material. Precise characterization of these materials and their properties is therefore critical to the understanding of the behavior of these novel moiré materials (and 2D heterostructures in general). In this talk\, I will discuss how spontaneous mechanical deformations (atomic reconstruction) and resultant intralayer strain fields at moiré superlattices of twisted bilayer graphene have been quantitatively imaged using 4D-STEM Bragg interferometry. I will also discuss the impact of these mechanical deformations to the electronic band structure of these moiré superlattices and the correlated electronic phases they host. The talk will then explore how various degrees of freedom that are unique to 2D materials may be used to tailor interfacial chemistry at well-defined mesoscopic electrodes and the outlook for new paradigms of functional materials for energy conversion and low-power electronic devices. \nBio: Kwabena was born in Ghana\, West Africa. He moved to the US in 2004 for his undergraduate studies in Chemistry at Calvin College\, MI\, graduating with honors in 2008. After a year working at UOP Honeywell in IL where he researched new catalysts for the petrochemical and gas processing industries\, he traveled from the Midwest to the East Coast to begin his graduate studies in Inorganic Chemistry with Prof. Daniel Nocera at MIT (and later Harvard University). His graduate research focused on structural and mechanistic studies of water splitting electrocatalysis at cobalt and nickel compounds. After receiving his Ph.D. in 2015 from Harvard University\, Kwabena began postdoctoral work in Prof. Philip Kim’s group in the Department of Physics at Harvard\, where he studied ion intercalation and quantum transport in 2D van der Waals heterostructures. In July 2018\, Kwabena joined the faculty of the UC Berkeley Department of Chemistry. Awards received include: AFOSR Young Investigator award\, ONR Young investigator award\, DOE Early Career Award\, Gordon and Betty Moore Materials Synthesis Fellow\, and CIFAR–Azrieli Global Scholar.
URL:https://qmi.miffanytark.com/event/kwabena-bediako-new-twists-on-chemistry-and-physics-in-moire-superlattices/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220324T100000
DTEND;TZID=America/Vancouver:20220324T110000
DTSTAMP:20220316T183214Z
CREATED:20220316T183214Z
LAST-MODIFIED:20220316T183214Z
UID:4171-1648116000-1648119600@qmi.miffanytark.com
SUMMARY:Marlou Slot: Atom by Atom and Layer by Layer: Designing and Realizing Electronic Quantum Matter
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\n \nSpeaker: Marlou Slot; National Institute of Standards and Technology (NIST) – Gaithersburg\, Maryland\, United States \nTitle: Atom by Atom and Layer by Layer: Designing and Realizing Electronic Quantum Matter \nAbstract: Quantum simulators are a versatile tool to study the behavior of quantum matter in a controlled way. Elusive or complex quantum systems are simulated using accessible quantum systems that can be manipulated at will. While platforms based on\, among others\, ultracold atoms and photons are well-established\, electronic platforms are currently being developed.\nThe scanning tunneling microscope (STM) is uniquely suited to create and manipulate electronic 2D potential landscapes at will in-situ. By atomic-scale patterning of the 2D electron gas at specific metal surfaces\, the electrons can be molded into electronic lattices with nearly any geometry. In this talk\, I will present CO molecules adsorbed on a Cu(111) surface as a highly-tunable electronic quantum simulator\, in which the lattice geometry\, the orbital degree of freedom\, the dimension and the topology can be tailored [1-4]. Moving beyond the in-situ approach\, ex-situ nanofabricated twisted van der Waals devices pave the way to study electron-electron interactions in tailor-made 2D potential landscapes [5]. I will demonstrate high-resolution gate-tunable Landau level spectroscopy and signatures of correlated states in twisted double bilayer graphene\, expanding the quantum simulation toolkit from atom by atom to layer by layer. \n[1] M. R. Slot et al.\, Nat. Phys. 13\, 672 (2017)\n[2] S. N. Kempkes and M. R. Slot et al.\, Design and characterization of electrons in a fractal geometry\, Nat. Phys. 15\, 127 (2019)\n[3] M. R. Slot and S. N. Kempkes et al.\, p-Band Engineering in Artificial Electronic Lattices\, PRX 9\, 011009 (2019)\n[4] S. N. Kempkes and M. R. Slot et al.\, Robust zero-energy modes in an electronic higher-order topological insulator\, Nat. Mater. 18\, 1292 (2019)\n[5] D.M. Kennes et al.\, Moiré heterostructures as a condensed-matter quantum simulator\, Nat. Phys. 17\, 155 (2021) \nBio: Marlou Slot is a Rubicon Postdoctoral Fellow and NIST-Georgetown PREP Fellow working with Dr. Joseph Stroscio at the National Institute of Standards and Technology. She obtained her PhD from Utrecht University working with Prof. Daniel Vanmaekelbergh and Prof. Ingmar Swart. Prior to that\, she obtained her undergraduate degree from RWTH Aachen University and EPFL Lausanne and she was a research assistant at Forschungszentrum Jülich. Her research interests focus on designer quantum matter realized and/or measured using scanning probe microscopy\, including van der Waals heterostructures and in-situ patterned surfaces.
URL:https://qmi.miffanytark.com/event/marlou-slot-atom-by-atom-and-layer-by-layer-designing-and-realizing-electronic-quantum-matter/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220317T100000
DTEND;TZID=America/Vancouver:20220317T110000
DTSTAMP:20220309T185436Z
CREATED:20220309T185436Z
LAST-MODIFIED:20220309T185436Z
UID:4165-1647511200-1647514800@qmi.miffanytark.com
SUMMARY:Alexandra Navrotsky: Recent Developments in High Temperature Calorimetry
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Alexandra Navrotsky – Center for Materials of the Universe (MotU) \, Arizona State University \nTitle: Recent developments in high temperature calorimetry \nAbstract: A variety of high temperature calorimetric techniques have recently advanced for application to refractory oxides and related materials. These include improvements in oxide melt solution calorimetry at temperatures up to 1500 ⁰C\, differential thermal analysis to 2500 ⁰C\, and “drop-n-catch” calorimetry to 3000 ⁰C. Used together\, these methods enable one to draw a more complete picture of phase stability\, order-disorder\, melting and crystallization\, and dissolution of solids in silicate melts. These methods will be illustrated using examples from rare earth materials chemistry. New developments in the calorimetry of chalcogenides and mixed anion materials will also be presented. The synergy among calorimetry\, first principles calculations and computations of phase diagrams will be emphasized. \nBio: Alexandra Navrotsky – Professor\, School of Molecular Sciences and School for Engineering of Matter\, Transport and Energy \nAffiliated Faculty Member\, School of Earth and Space Exploration \nDirector\, Center for Materials of the Universe
URL:https://qmi.miffanytark.com/event/alexandra-navrotsky-recent-developments-in-high-temperature-calorimetry/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220310T100000
DTEND;TZID=America/Vancouver:20220310T110000
DTSTAMP:20220302T215953Z
CREATED:20220302T215953Z
LAST-MODIFIED:20220302T215953Z
UID:4155-1646906400-1646910000@qmi.miffanytark.com
SUMMARY:Inna Vishik: Electronic Correlations and Topology across Tc in a Magnetic Weyl Semimetal
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961 \nPasscode: 113399 \n\nSpeaker: Inna Vishik\, Associate Professor in Physics and Astronomy at UC Davis \nAbstract: Co3Sn2S2 is a magnetic Weyl semimetal below its Curie temperature (Tc) of 177K. I will discuss our recent spatial and temperature-dependent angle-resolved photoemission spectroscopy (ARPES) studies in this system.  Across Tc\, we observe signatures of a topological phase transition\, but also observe changes in bulk bands which are inconsistent with a simple lifting of exchange interactions\, suggesting enhanced electronic correlations in the regime without long-range magnetic order.  I will also discuss spatial-dependent microARPES data which quantify the characteristic differences between Sn- and S- terminated surfaces. \nRef: Rossi\, Ivanov\, et al\, PRB 104\, 155115 (2021) \nBio:  Inna Vishik is an Associate Professor in Physics and Astronomy at UC Davis.  Since 2016\, her lab has been performing ARPES and ultrafast optics experiments to elucidate emergent phenomena in superconducting\, correlated\, and topological quantum materials.  Prior to this\, she received her PhD at Stanford and was subsequently a Pappalardo Postdoctoral fellow at MIT.
URL:https://qmi.miffanytark.com/event/inna-vishik-electronic-correlations-and-topology-across-tc-in-a-magnetic-weyl-semimetal/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220308T140000
DTEND;TZID=America/Vancouver:20220308T150000
DTSTAMP:20211101T210215Z
CREATED:20211101T210215Z
LAST-MODIFIED:20211101T210215Z
UID:3545-1646748000-1646751600@qmi.miffanytark.com
SUMMARY:Careers in Outreach
DESCRIPTION:Speakers: \n\nTheresa Liao\, Communications Coordinator\, Storyteller\, Department of Physics and Astronomy\, UBC\nAndrew Jamison\, Senior Manager\, Geering Up and Outreach\, UBC\nElla Meyer\, Quantum Computing Outreach Coordinator\, Geering Up\, UBC
URL:https://qmi.miffanytark.com/event/careers-in-outreach/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220303T100000
DTEND;TZID=America/Vancouver:20220303T230000
DTSTAMP:20220228T230022Z
CREATED:20220228T230022Z
LAST-MODIFIED:20220228T230022Z
UID:4148-1646301600-1646348400@qmi.miffanytark.com
SUMMARY:Ke Zou: Recent progress on understanding the superconductivity of bulk and monolayer FeSe
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n\nSpeaker: Ke Zou\, Stewart Blusson Quantum Matter Institute \nAbstract: \nThe physics of high-temperature superconductors is usually governed by the interplay of the spin and charge degrees of freedom. FeSe has the simplest chemical composition among Fe-based superconductors\, yet monolayer FeSe on SrTiO3 substrate reports one of the highest superconducting transition temperatures. I will summarize the progress on understanding its superconductivity from my group and other groups in the recent couple of years. We will discuss the specific roles of charge transfer\, spin magnetic moment\, and phonon coupling in this system. \n\nF. Li\, I. Elfimov\, and G.A. Sawatzky\, “Modulation doping of the FeSe monolayer on SrTiO3”\, submitted (2022).\nC. Liu\, H. Shin\, A. Doll\, H.H. Kung\, R.P. Day\, B.A. Davidson\, J. Dreser\, G. Levy\, A. Damascelli\, C. Piamonteze\, and K. Zou\, “High-temperature superconductivity and robustness against magnetic polarization in monolayer FeSe on EuTiO3”\, npj Quantum Materials 6\, 85 (2021).\nC. Liu\, R.P. Day\, F. Li\, R.L. Roemer\, S. Zhdanovich\, S. Gorovikov\, T. Pedersen\, J. Jiang\, S. Lee\, M. Schneider\, D. Wong\, P. Dosanjh\, F.J. Walker\, C.H. Ahn\, G. Levy\, A. Damascelli\, G.A. Sawatzky\, and K. Zou\, “High-order replica bands in monolayer FeSe/SrTiO3 revealed by polarization-dependent photoemission spectroscopy”\, Nature Communications 12\, 4573 (2021).\n\nBio: Assistant Professor\, Department of Physics and Astronomy – SBQMI \n\n\n\n\n\n\nResearch Focus\nOur research interests are in the growth of complex oxide and chalcogenide films by molecular beam epitaxy and the studies of their properties and functions. We aim to achieve scientific and technological breakthroughs in new materials and new functional devices. We integrate molecular beam epitaxy synthesis with nanostructure fabrication and characterization techniques for physical and electronic structures\, to explore and control the generated properties in new materials and in new forms of materials\, such as in heterostructures and gated field-effect transistors.
URL:https://qmi.miffanytark.com/event/ke-zou-recent-progress-on-understanding-the-superconductivity-of-bulk-and-monolayer-fese/
CATEGORIES:CM Seminar
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220217T100000
DTEND;TZID=America/Vancouver:20220217T110000
DTSTAMP:20220209T183956Z
CREATED:20220209T183956Z
LAST-MODIFIED:20220209T183956Z
UID:4065-1645092000-1645095600@qmi.miffanytark.com
SUMMARY:Fazel Tafti: A New Paradigm for Colossal Magnetoresistance and Nonlinear Hall Effect
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09 \nMeeting ID: 684 7017 3961\nPasscode: 113399 \n\nSpeaker: Fazel Tafti\, Boston College \nAbstract \nMaterials with strong magneto resistive responses are the backbone of spintronic technology\, magnetic sensors\, and hard drives. Among them\, manganese oxides with a mixed valence and a cubic perovskite structure stand out due to their colossal magnetoresistance (CMR). A double exchange interaction underlies the CMR in manganates\, whereby charge transport is enhanced when the spins on neighboring Mn3+ and Mn4+ ions are parallel. Prior efforts to find different materials or mechanisms for CMR resulted in a much smaller effect. In this talk\, I present the observation of an enormous CMR at low temperatures in EuCd2P2 without manganese\, oxygen\, mixed valence\, or cubic perovskite structure. EuCd2P2 has a layered trigonal lattice and exhibits antiferromagnetic ordering at 11 K. The magnitude of CMR (104%) in as-grown crystals of EuCd2P2 rivals the magnitude in optimized thin films of manganates. The magnetization\, transport\, and synchrotron X-ray data suggest that strong magnetic fluctuations are responsible for this phenomenon. The realization of CMR at low temperatures without heterovalency leads to a new regime for materials and technologies related to antiferromagnetic spintronics. \nBiography: \nFazel Tafti completed his PhD at the University of Toronto with Prof. Steven Julian. His thesis was focused on developing transport experiments under ultrahigh pressures in diamond anvil cells. His first postdoc position at the University of Sherbrook with Prof. Louis Taillefer was focused on the thermal conductivity and thermoelectric measurements in iron-based superconductors under intense magnetic fields. He then changed fields from physics to chemistry and completed a second postdoc at Princeton University with Prof. Bob Cava. His research was focused on the chemical synthesis of topological and magnetic materials.  He has been an assistant professor at Boston College (physics department) since 2016. His lab is interdisciplinary between physics\, chemistry\, and materials science. \n  \n 
URL:https://qmi.miffanytark.com/event/fazel-tafti-a-new-paradigm-for-colossal-magnetoresistance-and-nonlinear-hall-effect/
ORGANIZER;CN="Lada Synkova":MAILTO:lada.synkova@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220215T150000
DTEND;TZID=America/Vancouver:20220215T160000
DTSTAMP:20211101T205857Z
CREATED:20211101T205857Z
LAST-MODIFIED:20211101T205857Z
UID:3542-1644937200-1644940800@qmi.miffanytark.com
SUMMARY:Careers in Research
DESCRIPTION:Speakers:\nKateryna Foyevtsova \n\nResearch Associate\, Density Functional Theory\n\nSilvia Lueschner-Folk \n\nResearch Associate\, Topological Devices\n\nFengmiao Li \n\nResearch Associate\, Molecular Beam Epitaxy
URL:https://qmi.miffanytark.com/event/careers-in-research/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220210T100000
DTEND;TZID=America/Vancouver:20220210T110000
DTSTAMP:20220131T181905Z
CREATED:20220131T181905Z
LAST-MODIFIED:20220131T181905Z
UID:4052-1644487200-1644490800@qmi.miffanytark.com
SUMMARY:Christian Schneider: Exciton-Polaritons and their condensates in microcavities loaded with atomically thin crystals
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n\nSpeaker: Christian Schneider\, Institute of Physics\, University of Oldenburg \nMonolayer transition metal dichalcogenides (TMDC) have emerged as a new platform for studies of tightly bound excitons and many-body excitations in ultimately thin materials. Their giant dipole coupling to optical fields makes them very appealing for implementing novel photonic devices\, and for fundamental investigations in the framework of cavity quantum electrodynamics [1]. \nIn the regime of strong light-matter coupling between TMDC excitons and microcavity photons \,  the effect of bosonic condensation of becomes evident in the high-density regime [2]. I will  address the question on the emergence of long-range first-order spatial coherence\, via interferometric g(1)(t) measurements (Fig. 1c). I will finally discuss the emergence of coherence of exciton-polaritons in a trap at room temperature [3]. \n \nPolariton dispersion relation below (0.1 Pth\, panel a\, excitation laser at 1.671 eV) and above threshold (2Pth\, panel b). (c) Real space interference pattern produced in a Michelson interferometer\, with a zero delay between the two interfering paths\, and one retro-reflected image. \n[1] C. Schneider et al. Nature Commun. 9\, 2695 (2018). \n[2] C. Anton-Solanas\, et al. Nature Materials 1-7 (2021).
URL:https://qmi.miffanytark.com/event/christian-schneider-exciton-polaritons-and-their-condensates-in-microcavities-loaded-with-atomically-thin-crystals/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220203T100000
DTEND;TZID=America/Vancouver:20220203T110000
DTSTAMP:20220127T224446Z
CREATED:20220127T224446Z
LAST-MODIFIED:20220127T224446Z
UID:4048-1643882400-1643886000@qmi.miffanytark.com
SUMMARY:Eliška Greplová: Quantum Matter Meets Artificial Intelligence
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09 \nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: Eliska Greplova\, Assistant professor at the Department of Quantum Nanoscience at Delft University of Technology \n  \nAbstract: The fields of condensed matter\, artificial intelligence and quantum computing have independently experienced a number of breakthroughs in the last decade. In this talk\, I am going provide an illustration of their mutually beneficial overlaps and emerging interdisciplinary applications. Specifically\, I am going to show how AI-motivated ansätze for quantum wave functions can help us solve complex problems in topological condensed matter physics. The emergent topological modes can in turn redefine a figure of merit for design of quantum devices – that\, to close the circle – give rise to challenging control problems that can be efficiently solved with the help of machine learning algorithms. \n  \nBio: Eliska is an assistant professor at Kavli Institute of Nanoscience\, Delft University of Technology\, Netherlands. She is leading Quantum Matter and AI group\, where she works at the boundary of quantum computing\, artificial intelligence and condensed matter physics. Prior to joining TU Delft\, Eliska completed her PhD at Aarhus University in Denmark and postdoctoral fellowship at ETH Zürich in Switzerland. Eliska is a member of World Economic Forum Global Future Council on Quantum Computing and co-founder of an open science platform Virtual Science Forum.
URL:https://qmi.miffanytark.com/event/eliska-greplova/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220127T100000
DTEND;TZID=America/Vancouver:20220127T110000
DTSTAMP:20220120T194754Z
CREATED:20220120T194754Z
LAST-MODIFIED:20220120T194754Z
UID:4020-1643277600-1643281200@qmi.miffanytark.com
SUMMARY:Jennifer Cano: Higher magic angles in twisted bilayer graphene and topological twistronics 
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: Jennifer Cano\, Assistant Professor at Stony Brook University \nTitle: Higher magic angles in twisted bilayer graphene and topological twistronics \n  \nBio: Jennifer Cano is an Assistant Professor at Stony Brook University and an Affiliate Associate Research Scientist at the Flatiron Institute. She earned a PhD in physics from the University of California\, Santa Barbara\, in 2015\, and was subsequently a postdoctoral fellow at the Princeton Center for Theoretical Science. Her research is focused on the classification and realization of topological phases of matter\, ranging from strongly correlated phases with fractionalized excitations to non-interacting topological band structures. \n  \nAbstract: We present recent analytical and numerical results on the chiral model of twisted bilayer graphene and introduce a new platform for twistronic devices on the surface of a topological insulator. In the first part of the talk\, we study the flat band wavefunctions of chiral twisted bilayer graphene at higher magic angles. We show that at higher magic angles\, the wavefunctions exhibit an increasing number of zeros\, resembling quantum Hall wavefunctions at higher Landau levels. Zeros of the same chirality cluster near the center of the moire unit cell\, causing an enhanced phase winding and circulating current. The wavefunctions at higher magic angles have signatures in scanning tunneling microscopy and orbital magnetization experiments. In the second half of the talk\, we investigate the fate of the surface Dirac cone of a three-dimensional topological insulator subject to a superlattice potential. Using a combination of diagrammatic perturbation theory\, lattice model simulations\, and ab initio calculations\, we report a dramatic renormalization of the surface Dirac cone velocity and the formation of gapless satellite Dirac cones. The latter can produce very flat bands that may be a fruitful place to searching for interaction-driven physics.
URL:https://qmi.miffanytark.com/event/jennifer-cano/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220120T100000
DTEND;TZID=America/Vancouver:20220120T110000
DTSTAMP:20220106T005046Z
CREATED:20220106T005046Z
LAST-MODIFIED:20220106T005046Z
UID:3950-1642672800-1642676400@qmi.miffanytark.com
SUMMARY:Christoph Renner: Electronic Vortex Core Structure of a d-Wave High Temperature Superconductor
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker \nChristoph Renner\, Vice-Dean\, Faculty of Science at University of Geneva \n  \nAbstract:\nHigh temperature superconductivity (HTS) in copper oxides keeps challenging our understanding. Among the outstanding puzzles is the electronic structure of the Abrikosov vortex cores. The fundamental excitations bound to magnetic vortices in type-II superconductors carry information about essential properties of the superconducting state. Their proper identification is therefore of prime interest to elucidate the mechanism driving HTS. We will review recent vortex core studies and present new scanning tunneling microscopy data [1] at low magnetic field\, which unveil the d wave electronic structure of the vortex core predicted by Wang and MacDonald in 1995 [2]. We show that previously reported unconventional electronic structures\, including the checkerboard charge order in the vortex halo and the absence of a zero-bias conductance peak at the vortex center\, are direct consequences of short inter-vortex distance and consequent vortex-vortex interactions prevailing in earlier experiments done at significantly higher field. The remarkable change of the spectroscopic footprint of the vortex cores we find between 0.16 Tesla and 3 Tesla is surprising for such a low energy scale and calls for further investigations. \n  \n[1] Gazdic\, T.\, et al.\, arXiv:2103.05994\, 2021. \n[2] Y. Wang and A. H. MacDonald\, Physical Review B 52\, R3876 (1995). \n  \nBiography: \nChristoph Renner is professor of physics at the department of quantum matter physics at the University of Geneva\, Switzerland. He is leading a research group investigating electronic ground states and their interplay in low dimensional correlated electron systems using scanning probe microscopy and spectroscopy. Prior to joining Geneva in 2006\, he was appointed senior and then principal research fellow at University College London (UCL)\, with affiliations in the London Centre for Nanotechnology (LCN)\, the Department of Physics & Astronomy\, and the Department of Medicine. During his time in London\, he was also a business fellow of the London Technology Network. Before moving to UCL\, he held a visiting scientist position at the NEC Research Institute in Princeton. \n  \nWith over 30 years of experience\, Prof. Renner is an expert in developing and applying variable temperature scanning tunnelling microscopy to study correlated electron materials\, in particular superconducting\, charge ordered and low dimensional systems. His research is published in leading academic journals and has been selected as a physics highlight of 2017 by the editors of Physics. Currently\, his team is focusing on high temperature superconductors and spectroscopy of tuneable electronic properties in transition metal dichalcogenides and devices by means of strain\, space charge doping and thickness. Among recent scientific successes are the observation of the intrinsic vortex core signature expected for a superconductor whose gap has d-wave symmetry\, the link between CDW contrast inversion in STM images and the CDW gap well below the Fermi level\, and the exposure of a multiband CDW in a transition metal dichalcogenide. \n  \nInterested in public outreach\, Prof. Renner was founding director of the Physiscope of the University of Geneva between 2007 and 2017. Since 2014\, he is a founding member and president of the Scienscope\, an initiative introducing junior and high school children as well as the public to science in a hands-on and entertaining manner. Prof. Renner is also actively promoting collaborations with industry\, founding member and president of the Laboratory for Advanced Technology\, a gateway supporting innovation by facilitating industry access to the competences and equipment at the University of Geneva. He was vice president of the physics section (2011-2014) and\, since 2014\, he is vice dean for innovation and infrastructures of the Faculty of Science of the University of Geneva. \n  \nProf. Renner holds a PhD degree from the University of Geneva. He received the Jean Würth award for best PhD Thesis and the IBM award of the Swiss Physical Society. As hobbies\, he enjoys piloting\, travelling and cooking.
URL:https://qmi.miffanytark.com/event/christoph-renner/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20220113T100000
DTEND;TZID=America/Vancouver:20220113T110000
DTSTAMP:20220105T235901Z
CREATED:20220105T235901Z
LAST-MODIFIED:20220105T235901Z
UID:3948-1642068000-1642071600@qmi.miffanytark.com
SUMMARY:Claire Donnelly: Three-dimensional nanomagnetism: from textures in the bulk to 3D magnetic nanostructures
DESCRIPTION:https://ubc.zoom.us/j/68470173961?pwd=RTZEak9Pd01WajVOZHN5SW5YZHcyQT09\nMeeting ID: 684 7017 3961\nPasscode: 113399 \n  \n\nSpeaker: \nClaire Donnelly\, Max Planck Institute for Chemical Physics of Solids \n  \nAbstract: \nThree dimensional magnetic systems promise significant opportunities for applications\, for example providing higher density devices [1] and new functionalities associated with complex topology and greater degrees of freedom [2\,3]. \n  \nWith the recent development of three-dimensional imaging techniques\, it is now possible to map internal three-dimensional magnetic structures\, and their response to external excitations. In this way we have observed three-dimensional vortex structures\, as well as Bloch point singularities [4\,5] and\, more recently\, nanoscale magnetic vortex rings [6\,7]. \n  \nIn addition to the static magnetic structure\, the dynamic response of the 3D magnetic configuration to excitations is key to our understanding of both fundamental physics\, and applications. With our recent development of X-ray magnetic laminography [5]\, it is now possible to determine the magnetisation dynamics of a three-dimensional magnetic system [5]. \n  \nAs well as observing magnetic textures within the “bulk”\, recent advances in nanofabrication make possible the fabrication of complex 3D magnetic nanostructures [8]. In this way we have realised magnetic double helices [9]\, which host highly coupled domain wall pairs that in turn lead to textures in the magnetic induction [9]. These offer not only a potential route to domain wall processing\, but also for the patterning of nanotextures in the magnetic field. \n  \nThese new experimental capabilities for 3D magnetic systems open the door to complex three-dimensional magnetic structures\, and their dynamic behaviour. \n  \nReferences: \n[1] Parkin et al.\, Science 320\, 190 (2008) \n[2] Fernández-Pacheco et al.\, Nat. Comm. 8\, 15756 (2017) \n[3] Donnelly and Scagnoli\, J. Phys. D: Cond. Matt. 32\, 213001 (2020). \n[4] Donnelly et al.\, Nature 547\, 328 (2017). \n[5] Donnelly et al.\, Nature Nanotechnology 15\, 356 (2020). \n[6] Cooper\, PRL. 82\, 1554 (1999). \n[7] Donnelly et al.\, Nat. Phys. 17\, 316 (2020) \n[8] Skoric et al.\, Nano Lett. 20\, 184 (2020). \n[9] Donnelly et al.\, Nature Nanotechnology (2021) https://doi.org/10.1038/s41565-021-01027-7 . \n  \nBiography: \nFollowing her MPhys at the University of Oxford\, Claire went to Switzerland to carry out her PhD studies at the Paul Scherrer Institute and ETH Zurich. She was awarded her PhD in 2017 for her work on 3D systems\, which was recognised by a number of prizes including the APS Richard Greene Dissertation Award\, the Werner Meyer-Ilse Memorial Award\, the ETH Medal\, and the SPS Award for Computational Physics. After a postdoc at the ETH Zurich\, she moved to the University of Cambridge and the Cavendish Laboratory as a Leverhulme Early Career Research Fellow\, where she was awarded the L’Oreal For Women In Science Fellowship\, and the European Magnetism Association Young Scientist Award. Since September 2021 she is a Lise Meitner Group Leader of Spin3D at the Max Planck Institute for Chemical Physics of Solids in Dresden\, Germany.
URL:https://qmi.miffanytark.com/event/claire-donnelly/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211202T100000
DTEND;TZID=America/Vancouver:20211202T110000
DTSTAMP:20211122T171956Z
CREATED:20211122T171956Z
LAST-MODIFIED:20211122T171956Z
UID:3650-1638439200-1638442800@qmi.miffanytark.com
SUMMARY:Ben Breitung: Exploring High-Entropy Materials for Electrochemical Applications
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09 \nMeeting ID: 668 7999 5529 \nPasscode: 113399 \n  \n\nSpeaker: Ben Breitung\, Karlsruhe Institute of Technology \n  \nTitle: Exploring High-Entropy Materials for Electrochemical Applications \n  \nAbstract: High-entropy ceramics are a novel materials class with rapidly increasing significance since their discovery in 2015. Their unique crystal structure and the enormous compositional freedom allows tailoring these compounds towards desired properties\, thus enabling the development and optimization of new innovative materials for many existing applications. \nThis talk will give an overview about the general high-entropy concept and will describe the utilization of high-entropy ceramics for electrochemical applications. The fundamental impacts of high-entropy on material properties will be discussed\, especially in the application areas of batteries and catalytic materials. \n 
URL:https://qmi.miffanytark.com/event/ben-breitung/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211125T100000
DTEND;TZID=America/Vancouver:20211125T230000
DTSTAMP:20211117T221519Z
CREATED:20211117T221519Z
LAST-MODIFIED:20211117T221519Z
UID:3642-1637834400-1637881200@qmi.miffanytark.com
SUMMARY:Sinéad Griffin: Searching for New Matter
DESCRIPTION:Title: Searching for New Matter \nSpeaker: Sinéad Griffin\, Lawrence Berkeley National Laboratory \n  \nAbstract: \nThe past decade has seen a huge surge of interest in matter that cannot be described by our standard theories such as Landau-Ginzburg theory or the Standard Model. For example\, the theoretical proposal and subsequent experimental realization of topological phases in materials has ushered in a new era in the discovery of new forms of matter. On top of this\, how these new phases of matter interact with our conventional order parameters such as superconducting\, ferroelectricity\, and magnetism\, is an emerging area. In this talk\, I will discuss how theory and ab initio calculations have driven the discovery of such novel forms of matter\, with applications in classical and quantum computing. Finally\, I will discuss how such emergent phenomena in quantum materials are apt for exploring matter that cannot be described by the Standard Model – dark matter – and how materials-by-design approaches can suggest new and enhanced detection experiments for low-mass dark matter detection. \n  \nBio: \nSinéad Griffin is a staff scientist in the Materials Science Division and the Molecular Foundry at Berkeley Lab. Originally from Ireland\, her work as a theorist focuses on the description and discovery of quantum materials and physical phenomena at the nanoscale. The applications of Sinéad’s work range from new materials for energy and quantum computing to exploring the origins of the universe. Her awards include the Swiss Physical Society’s General Prize\, an MIT Rising Star in Physics\, the Falling Walls Bay Area Young Innovator of the Year\, and an ‘Emerging Leader’ from the Institute of Physics. Aside from her research\, she is involved with building a research network in condensed matter physics in Africa\, including being awarded an inaugural American Physical Society Innovation Fund grant to set up a US-Africa Workshop and Network. \n 
URL:https://qmi.miffanytark.com/event/sinead-griffin-searching-for-new-matter/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211118T100000
DTEND;TZID=America/Vancouver:20211118T230000
DTSTAMP:20211115T161934Z
CREATED:20211115T161934Z
LAST-MODIFIED:20211115T161934Z
UID:3597-1637229600-1637276400@qmi.miffanytark.com
SUMMARY:Cory R. Dean: Towards realizing twistronics on demand
DESCRIPTION:Title: Towards realizing twistronics on demand\nSpeaker: Cory R. Dean\, Department of Physics\, Columbia University \nAbstract: The ability to isolate atomically thin crystals\, such as graphene\, boron nitride\, and the transition metal dichalcogenides\, and then mechanically layer them to form new heterostructures has driven a recent revolution in materials design. These layered structures are held together by weak van der waals forces\, rather than chemical bonding making it possible to readily mix and match 2D materials spanning a wide range of properties\, virtually at will. More recently it has been demonstrated that the weak interlayer coupling also makes it possible to arbitrarily tune the rotation angle between adjacent layers and that varying this twist angle can lead to dramatic transformations in electronic\, optical and magnetic of the combined heterostructure. Here I will discuss our ongoing efforts to develop in-situ control with the goal towards realizing dynamically tunable “twistronics”\, where twisted devices can be reconfigured and probed in real-time. I will discuss recent progress in terms of mechanical rotation of individual monolayers\, improved understanding of interfacial dissipation mechanisms\, implementation of in-situ feedback of twist angle and new approaches towards developing non-contact control of the heterostructure geometry at the nanoscale. Prospects for realizing a tunable quantum simulator in a solid state platform will be discussed.
URL:https://qmi.miffanytark.com/event/cory-r-dean-towards-realizing-twistronics-on-demand/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211116T140000
DTEND;TZID=America/Vancouver:20211116T150000
DTSTAMP:20211029T204737Z
CREATED:20211029T204737Z
LAST-MODIFIED:20211029T204737Z
UID:3533-1637071200-1637074800@qmi.miffanytark.com
SUMMARY:Careers in Industry
DESCRIPTION:Speakers: \n\nPrakash Verma\, PhD in Theoretical Chemistry (University of Florida)\, Computational Chemist\, 1Qbit – a scientist with a background in quantum chemistry research\, most of which is in developing and benchmarking computational tools to compute molecular properties accurately and efficiently.\nChristin Wiedemann\, PhD in Physics (University of Stockholm)\, Director of Quality Engineering\, Slalom Build\, – an inclusive leader focused on strategic planning\, team management\, data analysis and interpretation\, innovation\, coaching\, training\, mentoring\, software development and testing.\nReza Rezaee\, PhD in Physics (University of Tennessee)\, postdoctoral research fellow at the Department of Physics and Max Planck Centre for Extreme and Quantum Photonics\, University of Ottawa and an entrepreneur. His research includes exotic quantum light sources and quantum optics with years of experience in experimental physics and scientific instrumentation\, laser spectroscopy\, quantum sensing using color centers\, and laser scanning confocal microscopy. In addition to experimental physics\, he also has experience in computational quantum chemistry. His mission is to accelerate the commercialization of quantum technologies.
URL:https://qmi.miffanytark.com/event/careers-in-industry/
CATEGORIES:Student event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211104T100000
DTEND;TZID=America/Vancouver:20211104T110000
DTSTAMP:20211028T191424Z
CREATED:20211028T191424Z
LAST-MODIFIED:20211028T191424Z
UID:3518-1636020000-1636023600@qmi.miffanytark.com
SUMMARY:Abhay Pasupathy: Recent progress in moiré materials
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09\nMeeting ID: 668 7999 5529\nPasscode: 113399 \n  \n\nSpeaker: Abhay Pasupathy\, Columbia University \nAbstract: I will discuss two recent sets of experiments from my group on moiré materials. In the first experiment\, I will discuss transport experiments on twisted bilayers of the monolayer semiconductor WSe2 (Wang et al\, Nature Materials 19\, 861 (2020) and Ghiotto et al Nature 597\, 345 (2021)). In these experiments\, we see the presence of an insulating state at half filling of the lowest subband of this material driven by electron correlations. I will describe our recent efforts to understand transport properties of this material and the evidence that there exist a ring of quantum critical points in this system at the metal-insulator transitions driven by doping and electric field. Time permitting\, I will then discuss scanning tunneling microscopy experiments on magic-angle twisted trilayer graphene where superconductivity has recently been observed. These imaging experiments show that the atomic and electronic structure of twisted trilayer graphene has a number of unique differences from its elder brother\, twisted bilayer graphene. I will speculate on the importance of these differences for superconductivity in this material. \n  \nBio: Abhay Pasupathy is a Professor of Physics at Columbia University (since 2009) and a group leader in the Condensed Matter Physics and Materials Science Department at Brookhaven National Laboratory (since 2019). His group uses scan probe microscopies and electron transport measurement to study emergent quantum phases in materials. Two-dimensional materials including exfoliated and thin-film grown materials are of particular interest.
URL:https://qmi.miffanytark.com/event/abhay-pasupathy-recent-progress-in-moire-materials/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211028T100000
DTEND;TZID=America/Vancouver:20211028T230000
DTSTAMP:20211019T145814Z
CREATED:20211019T145814Z
LAST-MODIFIED:20211019T145814Z
UID:3472-1635415200-1635462000@qmi.miffanytark.com
SUMMARY:Shanti Deemyad: Physics of Light Dense Matter: Quantum and Classical Effects in Dense lithium
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09\nMeeting ID: 668 7999 5529\nPasscode: 113399 \n  \n\nSpeaker: Prof. Shanti Deemyad\, University of Utah \n  \nRestricting the volume of a material\, through application of pressure\, changes the dominance of interactions within the material\, and exposes unnatural states of matter not found in our predominantly adiabatic universe.  One of the most exotic phenomena in condensed matter is the phase transitions purely driven by quantum effects. While quantum fluctuations in electronic states are always relevant\, it is also possible to observe quantum effects in lattice of very light elements. At ambient conditions\, the lightest metal of the periodic system is lithium. Similar to hydrogen and helium even at zero temperature lattice of lithium remains far from static and a fascinating system to explore the lattice quantum effects in light dense matter. \nIn this talk I will review some of the major goals of research in high pressure physics in exploring the quantum effects in ultra-light dense matter and discuss how nuclear quantum effects affect the structural stability and superconductivity of lithium and other ultra-light materials. I will present our studies on exploring the signature of lattice quantum contributions to the structural phase transitions of lithium at low temperature\, the effect of pressure on the evolution of Fermi surface of lithium and present our results on resolving the long-lasting mystery of lithium ground state. \n 
URL:https://qmi.miffanytark.com/event/shanti-deemyad-physics-of-light-dense-matter-quantum-and-classical-effects-in-dense-lithium/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211021T100000
DTEND;TZID=America/Vancouver:20211021T110000
DTSTAMP:20211014T184841Z
CREATED:20211014T184841Z
LAST-MODIFIED:20211014T184841Z
UID:3429-1634810400-1634814000@qmi.miffanytark.com
SUMMARY:Vedika Khemani: Non-unitary dynamics via spacetime duality
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09\nMeeting ID: 668 7999 5529\nPasscode: 113399 \n  \n\nAbstract: The addition of non-unitary ingredients to many-body quantum dynamics has led to a series of exciting developments in recent years\, including new out-of-equilibrium entanglement phases and phase transitions enabled by quantum measurements. I will present recent work [1] in which we show that a duality transformation between space and time on one hand\, and unitarity and non-unitarity on the other\, can be used to realize non-unitary evolutions whose steady states exhibit a rich variety of behavior in the scaling of their entanglement with subsystem size — from logarithmic to extensive to fractal. These fractally entangled states add a qualitatively new entry to the families of many-body quantum states that have been studied as energy eigenstates or dynamical steady states\, whose entropy almost always displays either area-law\, volume-law or logarithmic scaling. The range of steady-state entanglement scalings for the non-unitary evolution are closely related to the question of entanglement growth in time under different kinds of unitary dynamics\, from localized to chaotic. This connection is sharpened by an exact mapping to unitary evolution with edge decoherence\, in which  information is irreversibly “radiated  away” from one edge of the system. Finally\, I will discuss how these ideas could be experimentally realized with present-day or near-term quantum technologies\, and how spacetime duality allows us to mitigate (or eliminate altogether) the overhead from “postselection” of random measurement outcomes [2]. \n  \n[1] Matteo Ippoliti\, Tibor Rakovszky\, Vedika Khemani\, arxiv:2103.06873\n[2] Matteo Ippoliti\, Vedika Khemani\, PRL 126\, 060501 (2021) \n  \nBio: Vedika Khemani is an assistant professor of physics at Stanford University. After completing her Ph.D. at Princeton University in 2016\, she did her postdoctoral work as a Junior Fellow at Harvard. She is a recipient of an Alfred P. Sloan Fellowship\, a DOE Early Career Award\, the William L. McMillan Award\, an APS George E. Valley Jr. Prize\, the Breakthrough New Horizons in Physics Prize and the Packard Fellowship in Science and Engineering. \n 
URL:https://qmi.miffanytark.com/event/vedika-khemani-non-unitary-dynamics-via-spacetime-duality/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211014T100000
DTEND;TZID=America/Vancouver:20211014T110000
DTSTAMP:20211004T145423Z
CREATED:20211004T145423Z
LAST-MODIFIED:20211004T145423Z
UID:3374-1634205600-1634209200@qmi.miffanytark.com
SUMMARY:CM Seminar - Andrew Potter
DESCRIPTION:https://ubc.zoom.us/j/66879995529?pwd=dHpQb25LSGVZK3ozY243em5tenRWQT09\nMeeting ID: 668 7999 5529\nPasscode: 113399 \n  \n\nAbstract: Quantum computation tantalizing promises efficient solutions to a broad range of classically-hard materials and chemistry simulation problems of interest to both basic science and practical applications. However\, nascent quantum processors are severely limited in both memory and accuracy\, and remain a long way from surpassing state-of-the-art classical computational methods. In this talk\, I will review recent progress in bridging this gap by leveraging efficient quantum data compression afforded by tensor network representations\, along with opportunistic midcircuit qubit reset and re-use in order to simulate large-scale models of quantum materials with relatively few qubits. I will highlight recent experimental implementations of quantum tensor network algorithms for simulating entangled ground-states and non-equilibrium dynamics of correlated spins and electrons on a trapped ion quantum processor. \n  \nBio: Andrew Potter is an assistant professor in the physics and astronomy department at UBC\, and SBQMI principle investigator\, working on theoretical problems at the intersection of quantum matter\, dynamics\, information\, and computing. Before joining UBC/SBQMI obtained his PhD from MIT\, was a Gordon and Betty Moore foundation postdoctoral fellow at UC Berkeley\, an assistant professor of physics at the University of Texas at Austin\, and a principle theoretical physicist at Honeywell | Quantum Solutions. \n  \nhttp://qmi.ubc.ca/news/new-investigator-meet-andrew-potter/
URL:https://qmi.miffanytark.com/event/andrew-potter-simulating-highly-entangled-matter-with-quantum-tensor-networks/
CATEGORIES:CM Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20211007T100000
DTEND;TZID=America/Vancouver:20211007T110000
DTSTAMP:20210928T161002Z
CREATED:20210928T161002Z
LAST-MODIFIED:20210928T161002Z
UID:3322-1633600800-1633604400@qmi.miffanytark.com
SUMMARY:CM Seminar - Benjamin Frandsen
DESCRIPTION:Talk title: From Quantum Magnets to Magnetic Thermoelectrics: Short-Range Spin Correlations and the Secrets They Keep \nSpeaker: Benjamin Frandsen\, Brigham Young University \nAbstract: Short-range magnetic correlations have been increasingly recognized in recent years for their importance in contexts as widely varied as geometrically frustrated magnetism and functional magnetocaloric materials. Neutron scattering provides experimental access to these short-range correlations through magnetic diffuse scattering\, but characterizing magnetic short-range order with quantitative accuracy has remained a difficult task. Here\, I introduce magnetic pair distribution function (mPDF) analysis as a powerful tool for the detailed elucidation of shortrange magnetic correlations by Fourier transforming the diffuse magnetic scattering into real space\, and I present the application of mPDF to two material systems for which the details of the short-range magnetic correlations are crucial for their unusual properties. The first is TmMgGaO4\, an Ising triangular lattice antiferromagnet with rich low-temperature behavior\, including a predicted topological Kosterlitz-Thouless transition. Our mPDF results reveal intricate spin correlations consistent with this theoretical prediction\, providing strong experimental support for the proposed Kosterlitz-Thouless phase. The second material is MnTe\, an antiferromagnetic semiconductor with excellent thermoelectric properties at elevated temperatures. The presence of short-range antiferromagnetic correlations above the Neel temperature contributes to the enhanced thermoelectric response. Using mPDF\, we reveal the real-space nature of these magnetic correlations and gain deeper insight into the origin of the unusually large thermopower of MnTe. \nBio: Ben Frandsen is an assistant professor in the Department of Physics and Astronomy at Brigham Young University in Utah. He earned his PhD in condensed matter physics at Columbia University in New York in 2016\, working with Professors Tomo Uemura and Simon Billinge on muon spin relaxation and x-ray and pair distribution function studies of strongly correlated electron systems. His graduate research took him to beautiful Vancouver many times to perform muon experiments at TRIUMF. Following his graduate work\, he joined the group of Bob Birgeneau at UC Berkeley in California as a postdoctoral researcher\, working primarily on experimental studies of iron-based superconductors. He joined the faculty at BYU in August 2018. His research at BYU is focused on investigating the local atomic and magnetic structure of complex materials using beams of x rays\, neutrons\, and muons. He was selected as a recipient of the U.S. Department of Energy Early Career Award in 2020 to study local atomic and magnetic structure in energy-relevant materials.
URL:https://qmi.miffanytark.com/event/cmseminar-benjamin-frandsen/
CATEGORIES:CM Seminar
ORGANIZER;CN="Kaho Saito":MAILTO:kaho.saito@ubc.ca
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