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X-WR-CALDESC:Events for Stewart Blusson Quantum Matter Institute
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DTSTART;TZID=America/Vancouver:20260226T100000
DTEND;TZID=America/Vancouver:20260226T110000
DTSTAMP:20260224T000532Z
CREATED:20260224T000532Z
LAST-MODIFIED:20260224T000532Z
UID:9183-1772100000-1772103600@qmi.miffanytark.com
SUMMARY:CM Seminar: Cryogenic electron microscopy of polar order in a quantum paraelectric\, Ismail El Baggari\, UBC
DESCRIPTION:Speaker: Ismail El Baggari\, UBC \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Scanning transmission electron microscopy (STEM) now routinely resolves the atomic structure and chemistry of materials with sub-angstrom resolution. Recent advances in instrumentation further allow spatially resolved mapping of subtle\, picometer-scale atomic shifts that underpin emergent functional properties. In ferroelectrics\, for example\, polarization arises from tiny atomic displacements that break inversion symmetry; STEM can locally visualize these displacements and reveal novel polarization textures.  \nDespite this potential\, STEM applications have traditionally been restricted to room temperature (or higher) because of longstanding challenges in implementing stable liquid-helium cryogenic cooling\, such as vibrations and inadequate temperature control. My group has been addressing these limitations by developing dedicated liquid helium cryogenic STEM instrumentation to probe materials whose emergent properties appear only at low temperatures. We have now overcome key technical hurdles and can cool samples inside the microscope to cryogenic regimes down to ~20 K. I will present recent applications of cryogenic STEM to imaging order and disorder in ferroelectrics. In particular\, I will highlight quantum paraelectric SrTiO₃\, a material that hovers on the verge of ferroelectricity yet remains paraelectric to the lowest temperatures due to quantum fluctuations. Using cryogenic STEM\, we directly visualize emergent nanoscale polar textures and mesoscale correlations in this quantum paraelectric phase. \n  \nZhang et al. “Inverse Melting of Polar Order in Chemically Substituted BaTiO3.” Physical Review Letters 134.25 (2025) \nRennich\, et al. “Ultracold cryogenic TEM with liquid helium and high stability.” Proceedings of the National Academy of Sciences122.36 (2025) \nZhang et al. “Nanoscale Polar Landscapes in Quantum Paraelectric SrTiO3.” arXiv:2509.24969 (2025).
URL:https://qmi.miffanytark.com/event/cm-seminar-cryogenic-electron-microscopy-of-polar-order-in-a-quantum-paraelectric-ismail-el-baggary-ubc/
CATEGORIES:CM Seminar
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260305T100000
DTEND;TZID=America/Vancouver:20260305T110000
DTSTAMP:20260226T204101Z
CREATED:20260226T204101Z
LAST-MODIFIED:20260226T204101Z
UID:9238-1772704800-1772708400@qmi.miffanytark.com
SUMMARY:CM Seminar: Phonons with a Twist: Measuring the Phonon Hall Viscosity in a Proposed Quantum Spin Liquid\, Brad Ramshaw\, Cornell University
DESCRIPTION:Speaker: Brad Ramshaw\, Cornell University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Phonons with a Twist: Measuring the Phonon Hall Viscosity in a Proposed Quantum Spin Liquid \nAbstract: The thermal Hall effect\, where a temperature gradient develops perpendicular to both a heat current and an applied magnetic field\, has emerged unexpectedly in a wide range of insulating materials. These include the Mott-insulating parent compounds of cuprate superconductors\, several proposed spin-liquid candidates\, and\, more recently\, almost everything. This raises fundamental questions: Are these thermal Hall effects driven by intrinsic coupling between heat carriers and magnetic fields? What are the heat carriers? And can we trust the data? \nRuCl3 has been at the center of this debate\, initially proposed to host chiral Majorana edge modes that produce a quantized thermal Hall effect. Competing explanations invoke phonon skew scattering – an extrinsic mechanism. \nI will introduce the concept of phonon Berry curvature and show how it gives rise to phonon Hall viscosity – a dissipationless viscosity that rotates phonon polarizations and bends their trajectories. I will then show how we use ultrasonic measurements to directly probe phonon Hall viscosity. Our results reveal that phonons in RuCl3 exhibit a Hall viscosity that both qualitatively and quantitatively accounts for the observed thermal Hall effect. This finding overturns both prevailing views: the thermal Hall effect in RuCl3 is neither extrinsic nor is it due to Majorana edge modes. Instead\, it arises from intrinsic coupling between lattice and spin degrees of freedom. \nMore broadly\, I will argue that the acoustic Faraday effect is a powerful tool for detecting phonon Hall viscosity and the associated Berry curvature in gapped topological states of matter. I will also comment on the current state of thermal transport experiments and give a possible explanation for the unexpected abundance of insulators with thermal Hall effects.
URL:https://qmi.miffanytark.com/event/cm-seminar-phonons-with-a-twist-measuring-the-phonon-hall-viscosity-in-a-proposed-quantum-spin-liquid-brad-ramshaw-cornell-university/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260312T100000
DTEND;TZID=America/Vancouver:20260312T110000
DTSTAMP:20260305T234644Z
CREATED:20260305T234644Z
LAST-MODIFIED:20260305T234644Z
UID:9247-1773309600-1773313200@qmi.miffanytark.com
SUMMARY:CM Seminar: Foundational Graph Atomic Cluster Expansion for Atomistic Thermodynamic and Kinetic Simulation\, Ralf Drautz\, Ruhr-Universität Bochum
DESCRIPTION:Speaker: Ralf Drautz\, Ruhr-Universität Bochum \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Foundational Graph Atomic Cluster Expansion for Atomistic Thermodynamic and Kinetic Simulation \nAbstract: The atomic-scale simulation of technological materials requires a departure from task-specific approximations toward universal foundations capable of generalizing across diverse chemistries. While first-principles methods offer the necessary accuracy\, they lack the scalability required for foundational coverage. This presentation introduces the Graph Atomic Cluster Expansion (GRACE)\, a framework designed to bridge this gap by providing a mathematically complete and computationally efficient description of atomic interactions. \nGRACE unifies equivariant message-passing with high-body-order polynomials\, enabling the development of foundational parameterizations that span the periodic table. I will demonstrate that GRACE facilitates robust thermodynamic and kinetic simulations for a wide range of materials\, including materials with complex\, multi-component compositions. Specific applications will be presented\, including the computation of phase diagrams and the prediction of diffusion kinetics in complex solids. Finally\, I will address the incorporation of magnetism and charge transfer and discuss the systematic generation of comprehensive training datasets for creating transferable and accurate foundational parameterizations.
URL:https://qmi.miffanytark.com/event/cm-seminar-foundational-graph-atomic-cluster-expansion-for-atomistic-thermodynamic-and-kinetic-simulation-ralf-drautz-ruhr-universitat-bochum/
CATEGORIES:CM Seminar
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260326T100000
DTEND;TZID=America/Vancouver:20260326T110000
DTSTAMP:20260316T221454Z
CREATED:20260316T221454Z
LAST-MODIFIED:20260316T221454Z
UID:9265-1774519200-1774522800@qmi.miffanytark.com
SUMMARY:CM Seminar: Real-Space Superconductivity: Schafroth\, Bipolarons\, Cuprates\, Pavel Kornilovich (Oregon State University)
DESCRIPTION:Speaker: Pavel Kornilovich\, Oregon State University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Real-Space Superconductivity: Schafroth\, Bipolarons\, Cuprates \nAbstract: The idea that superconductivity might arise from the condensation of real-space electron pairs was proposed by Swiss physicist Robert Schafroth several years before the development of BCS theory. Although this concept is now known as Bose-Einstein-condensation superconductivity\, Schafroth’s contributions are largely forgotten. In this talk\, I will briefly review Schafroth’s work and his complex relationships with John Bardeen and Leon Cooper. I will then describe a version of real-space superconductivity involving phonon bipolarons as normal-state charge carriers. I argue that anisotropic bipolarons account for many of the properties of the copper-oxide superconductors discovered in 1986. I will discuss how a deeper understanding of bipolarons might help raise the critical temperature beyond the current record of 133 K.
URL:https://qmi.miffanytark.com/event/cm-seminar-real-space-superconductivity-schafroth-bipolarons-cuprates-pavel-kornilovich-oregon-state-university/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260402T100000
DTEND;TZID=America/Vancouver:20260402T110000
DTSTAMP:20260325T024634Z
CREATED:20260325T024634Z
LAST-MODIFIED:20260325T024634Z
UID:9276-1775124000-1775127600@qmi.miffanytark.com
SUMMARY:CM Seminar: High rank multipole order: feeling the strain\, Ian Fisher\, Stanford University
DESCRIPTION:Speaker: Ian Fisher\, Stanford University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: High rank multipole order: feeling the strain \nAbstract: Interactions can lead to a wide variety of ordered states in materials. Phase transitions in which local atomic states develop spontaneous high rank multipole order provides a particularly rich arena for new insights. A key element in the study of such systems is the ability to couple to the associated order parameter. \nI will describe how one can couple to a variety of different multipolar states\, motivating new methodologies to measure a fundamental thermodynamic material property\, the multipole susceptibility. One can also identify effective transverse fields\, which\, when applied inside the ordered state\, induce quantum fluctuations and can drive a multipolar quantum phase transition. I will explain the very special roles that strain can play for each of the cases\, and will outline new experimental approaches in which the materials ‘feel the strain’ in different ways. \nEven while we manipulate the crystal lattice to tune electronic order\, hyperfine interactions are not always completely innocent. Along the way I will introduce the special case of an electro-nuclear quantum phase transition. 
URL:https://qmi.miffanytark.com/event/cm-seminar-high-rank-multipole-order-feeling-the-strain-ian-fisher-stanford-university/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260409T100000
DTEND;TZID=America/Vancouver:20260409T110000
DTSTAMP:20260331T170316Z
CREATED:20260331T170316Z
LAST-MODIFIED:20260331T170316Z
UID:9281-1775728800-1775732400@qmi.miffanytark.com
SUMMARY:CM Seminar: Which Material is worth Studying? (from the viewpoint of quantum materials)\, Leslie M. Schoop\, Princeton University
DESCRIPTION:Speaker: Leslie M. Schoop – Department of Chemistry – Princeton University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Which Material is worth Studying? (from the viewpoint of quantum materials) \nAbstract: Quantum materials are hoped to change technology in various aspects. However\, most of the desired applications are hindered by the lack of suitable materials. While we know tens of thousands of crystalline inorganic compounds\, we studied only a tiny fraction of those for their potential as quantum materials. As synthesis of such materials\, especially in single crystal form\, can be challenging\, a brute force experimental study of all known crystalline inorganic compounds is not feasible. In my group\, we are developing simple concepts that guide us to find those materials worth growing and studying. We are using concepts from chemistry to understand\, predict and synthesize new quantum materials. In this talk\, I will show how simple concepts derived from the theory of chemical bonding allow us to make predictions about electronic structures of materials\, which we can then use to find various types of new quantum materials. For example\, thinking about the degree of delocalization in a chemical bond can be helpful to find kagome or linear-chain materials with band structures that better resemble simple tight binding models\, and therefore can fulfill predictions made for certain materials based on “pen and paper” theory. I will give a general overview how powerful chemical concepts are in materials discovery and highlight a flute of materials that were discovered in this light.
URL:https://qmi.miffanytark.com/event/cm-seminar-which-material-is-worth-studying-from-the-viewpoint-of-quantum-materials-leslie-m-schoop-princeton-university/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260416T100000
DTEND;TZID=America/Vancouver:20260416T110000
DTSTAMP:20260327T202930Z
CREATED:20260327T202930Z
LAST-MODIFIED:20260327T202930Z
UID:9279-1776333600-1776337200@qmi.miffanytark.com
SUMMARY:CM Seminar: Belonging at QMI: What Our Community Told Us\, James Day\, UBC Blusson QMI
DESCRIPTION:Speaker: James Day\, UBC Blusson QMI \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Belonging at QMI: What Our Community Told Us \nAbstract: In fall 2025\, members of the QMI community were invited to share their experiences of equity\, inclusion\, and belonging at the institute. This presentation summarizes preliminary findings from survey responses across our community. The results show strengths\, including high levels of respect within immediate lab environments\, comfort sharing opinions\, and recognition of diverse perspectives. At the same time\, the survey identifies a major institutional challenge: while many respondents report a strong sense of belonging within their own labs\, that feeling drops substantially at the institute level. Qualitative responses point to recurring concerns around supervision and power\, caregiving and flexibility\, accessibility of physical spaces\, and everyday cultural practices that can unintentionally exclude. On behalf of the EDI Committee\, I will highlight these themes and share practical next steps that could help QMI become a more connected\, inclusive\, and supportive community. The presentation will be short\, leaving lots of time for conversation.
URL:https://qmi.miffanytark.com/event/cm-seminar-belonging-at-qmi-what-our-community-told-us-james-day-ubc-blusson-qmi/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260505T140000
DTEND;TZID=America/Vancouver:20260505T150000
DTSTAMP:20260427T231043Z
CREATED:20260427T231043Z
LAST-MODIFIED:20260427T231043Z
UID:9365-1777989600-1777993200@qmi.miffanytark.com
SUMMARY:Special Seminar: Fractionalized theory for intertwined orders and hole pockets in the cuprate pseudogap\, Subir Sachdev\, Harvard University
DESCRIPTION:Speaker: Subir Sachdev\, Harvard University \nTime: 2:00-3:00pm \nLocation: BRIM 311 \nTitle: Fractionalized theory for intertwined orders and hole pockets in the cuprate pseudogap \nAbstract: I review old and recent experimental results on the enigmatic pseudogap phase of the hole-doped cuprates. I argue that the evidence implies an underlying metallic state with hole pockets which have a non-Luttinger area enclosed by the Fermi surface. Such a state must also feature a quantum spin liquid with fractionalization. I describe how the intertwined d-wave superconductivity and charge orders emerge from a fractionalized perspective. 
URL:https://qmi.miffanytark.com/event/special-seminar-fractionalized-theory-for-intertwined-orders-and-hole-pockets-in-the-cuprate-pseudogap-subir-sachdev-harvard-university/
CATEGORIES:Other seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260509T100000
DTEND;TZID=America/Vancouver:20260509T150000
DTSTAMP:20260505T003729Z
CREATED:20260505T003729Z
LAST-MODIFIED:20260505T003729Z
UID:9371-1778320800-1778338800@qmi.miffanytark.com
SUMMARY:Join us for Science Rendezvous at UBC Blusson QMI!
DESCRIPTION:QMI is taking part in Science Rendezvous\, and we’d love to invite everyone interested in science to come by and enjoy the institute during this free\, family-friendly science festival! \n📍 Stewart Blusson Quantum Matter Institute\, 2355 East Mall\, Vancouver\, BC V6T 1Z4 \n🗓️ Saturday\, May 9\, 2026\, 10:00 a.m.–3:00 p.m. \n🎟️ Free + all ages \nVisitors will get to explore the quantum world through lab tours and demos\, including: \n\nCrystal growth lab \nThe beautiful crystals found in nature represent only a tiny fraction of what’s possible using all the elements on the periodic table. The Hallas Lab designs and grows crystals not found in nature\, particularly materials with strong quantum mechanical effects\, giving rise to exotic magnetic and electronic properties.\nScanning tunnelling microscopy \nSee how the Laboratory for Atomic Imaging Research probes the quantum world\, exploring materials that may hold the key to next-generation quantum technologies.\nQuantum levitation track demo\nWitness the spectacular science of quantum levitation! In this demo\, a superconducting puck is locked in place by magnetic flux lines and defies gravity by floating above a magnetic track.\nQuantum materials lab\nOur lab studies new kinds of materials that could one day help build better technologies. To understand them\, we use powerful tools that let us “see” how tiny particles called electrons move inside these materials. We also try to change how these materials behave.\nUltrafast Spectroscopy lab\nWe use lasers to rapidly and remotely measure critical minerals in rocks. Our approach could have a significant impact in transitioning mining towards a more sustainable future in all phases of the mining cycle: exploration/planning\, excavation and processing.\n\nWe’re also looking for a couple of student volunteers to help welcome visitors and support activities throughout the day. Volunteers will receive lunch! \nInterested in volunteering? Please email James Day at jday@phas.ubc.ca. \nView the full UBC Science Rendezvous program here: https://science.ubc.ca/events/rendezvous \nView the Tour Map
URL:https://qmi.miffanytark.com/event/join-us-for-for-science-rendezvous/
LOCATION:UBC Stewart Blusson Quantum Matter Institute\, 2355 East Mall\, Vancouver\, British Columbia\, V6T 1Z4\, Canada
CATEGORIES:Public
ATTACH;FMTTYPE=image/jpeg:https://qmi.miffanytark.com/wp-content/uploads/2025/01/UBC_20230309_PJ_5808-scaled-1.jpg
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260513T090000
DTEND;TZID=America/Vancouver:20260513T150000
DTSTAMP:20260511T235120Z
CREATED:20260511T235120Z
LAST-MODIFIED:20260511T235120Z
UID:9394-1778662800-1778684400@qmi.miffanytark.com
SUMMARY:Busch Pfeiffer Vacuum Training
DESCRIPTION:Please fill out this brief form to register your participation to our Pfeiffer Canada Vacuum Training in partnership with UBC Blusson QMI. \nHere are the details:\n– Date:        Wednesday\, May 13\, 2026\n– Time:        9:00 am – 3:00 pm (Western time)\n– Location:  UBC\n– Room:      Room 311\, Brimacombe Building\n– Lunch:      Pizza will be served for all \n  \nRegister here
URL:https://qmi.miffanytark.com/event/busch-pfeiffer-vacuum-training/
CATEGORIES:External event
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260910T100000
DTEND;TZID=America/Vancouver:20260910T110000
DTSTAMP:20260901T233335Z
CREATED:20260901T233335Z
LAST-MODIFIED:20260901T233335Z
UID:9504-1789034400-1789038000@qmi.miffanytark.com
SUMMARY:CM Seminar: The Nonlinear Terahertz Response of Graphene\, Marc Dignam\, Queen’s University
DESCRIPTION:Speaker: Marc Dignam\, Queen’s University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: The Nonlinear Terahertz Response of Graphene \nAbstract: \nOver the past decade or more\, there has been a great deal of interest in the mechanical\, electronic and optical properties of graphene. The interest in the optical properties of graphene stems largely from two key features of the electronic band structure: it is gapless and the dispersion is linear near the Dirac points where the two bands touch.  Both features can be uniquely accessed using terahertz radiation\, because\, under the right conditions\, it can strongly drive both interband and intraband transitions. In this talk\, I will describe the formalism and computational results of our density-matrix approach to modelling the nonlinear terahertz response of graphene\, including various scattering mechanisms. As I will show\, in undoped graphene\, a very large nonlinearity can arise due to the interplay between the intraband and interband transitions. I will finish by showing how a parallel-plate waveguide configuration containing graphene can be used to generate the third harmonic of a 2.0 terahertz incident field with a power conversion efficiency of up to 20%. If time allows\, I will also discuss density functional results for the effects of impurities and strain on third harmonic generation in graphene. \nBiography: Marc Dignam received his PhD in theoretical condensed matter physics from the University of Toronto in 1991 and held a postdoctoral fellowship at AT&T Bell Labs in Murray Hill (1991–1993)\, working under Nobel laureate Horst Störmer. In 1994\, he joined MPB Technologies as an NSERC Industrial Research Fellow\, modelling and designing fibre‑optic communication devices and systems. He was a professor in the Department of Physics\, Engineering Physics & Astronomy at Queen’s University from 2000 to 2026 and is now a Professor Emeritus at Queen’s. Dr. Dignam’s research is in theoretical and computational condensed matter physics and optics. He has worked on the linear and nonlinear optical and terahertz response of semiconductor superlattices\, quantum wells\, and nanorods; the nonlinear terahertz response of monolayer and bilayer graphene; and nonlinear quantum optics in ring‑resonator and photonic‑crystal systems.
URL:https://qmi.miffanytark.com/event/cm-seminar-the-nonlinear-terahertz-response-of-graphene-marc-dignam-queens-university/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
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BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260917T100000
DTEND;TZID=America/Vancouver:20260917T110000
DTSTAMP:20260910T050431Z
CREATED:20260910T050431Z
LAST-MODIFIED:20260910T050431Z
UID:11444-1789639200-1789642800@qmi.miffanytark.com
SUMMARY:CM Seminar: Coherent bunching of anyons and their dissociation in interference experiments\, Moty Heiblum\, Weizmann Institute of Science
DESCRIPTION:Speaker: Moty Heiblum\, Weizmann Institute of Science \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Coherent bunching of anyons and their dissociation in interference experiments \nAbstract: \nAharonov–Bohm interference of fractional quasiparticles in the quantum Hall effect generally reveals their elementary charge (e*). Recently\, our novel interferometry experiments found flux periods of ΔΦ = (e/e*)Φ0 (Φ0 the flux quantum) at moderate temperatures. More recent interference experiments of ‘particle–hole conjugated’ states (ν = 2/3\, 3/5\, and 4/7)\, revealed unexpected flux periodicities of ΔΦ = ν−1Φ0. Moreover\, the measured Fano factor (F) of the partitioned quasiparticles (in the interferometer’s quantum point contacts) was found to be F = ν\, instead of F = e*/e. These observations indicate that the interference (and F) suggest bunching (clustering) of the elementary quasiparticles\, such as coherent pairs\, triplets\, and quadruplets\, respectively. A small metallic gate (‘top-gate’)\, deposited in the center of the interferometer bulk\, forms an antidot (or a dot) when charged\, thus introducing ‘local quasiparticles’ at its perimeter in the bulk. Surprisingly\, charging the dot led to an unexpected dissociation of the ‘bunched quasiparticles’\, thus recovering the conventional flux periodicity set by the elementary charges. However\, the Fano factors consistently remained as F = ν. The two observations—bunching and debunching (dissociation)—were not expected by current theories. Planned experiments with Jain’s ‘particle states’ and with ‘even denominator states’ are planned.
URL:https://qmi.miffanytark.com/event/cm-seminar-coherent-bunching-of-anyons-and-their-dissociation-in-interference-experiments-moty-heiblum-weizmann-institute-of-science/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260921T090000
DTEND;TZID=America/Vancouver:20260923T163000
DTSTAMP:20260914T172725Z
CREATED:20260914T172725Z
LAST-MODIFIED:20260914T172725Z
UID:11445-1789981200-1790181000@qmi.miffanytark.com
SUMMARY:Quantum Information: Entanglement of Mathematics & Physics
DESCRIPTION:A three-day workshop cohosted by UBC Blusson QMI and RIKEN on the deep connections among quantum information\, mathematics\, and physics — spanning quantum gravity\, condensed matter\, quantum computing\, and quantum error correction. \n  \nPlease visit the event’s website for more info here.
URL:https://qmi.miffanytark.com/event/quantum-information-entanglement-of-mathematics-physics/
LOCATION:Fred Kaiser Building\, UBC\, Room 2020/2030\, 2332 Main Mall\, Vancouver\, British Columbia\, V6T 1Z4\, Canada
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20260924T100000
DTEND;TZID=America/Vancouver:20260924T110000
DTSTAMP:20260918T222322Z
CREATED:20260918T222322Z
LAST-MODIFIED:20260918T222322Z
UID:9578-1790244000-1790247600@qmi.miffanytark.com
SUMMARY:CM Seminar: Catalog of Altermagnetism in Magnetic Wallpaper/Space Groups and Nonsymmorphic Altermagnets\, Dr. Ching-Kai Chiu (RIKEN)
DESCRIPTION:Speaker:Dr. Ching-Kai Chiu\, RIKEN \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Catalog of Altermagnetism in Magnetic Wallpaper/Space Groups and Nonsymmorphic Altermagnets \nAbstract: Altermagnets\, a third class of collinear magnets\, have zero net magnetization but spin-split bands\, even without spin–orbit coupling. Their standard classification into six wave types (d-\, g-\, and i-wave in 2D and 3D) relies on magnetic point groups of mostly centrosymmetric crystals. In this talk\, I will show that spinless time reversal replaces inversion\, so altermagnetism extends to non-centrosymmetric crystals. We catalog the Brillouin-zone spin splitting of all 17 altermagnetic wallpaper groups and 422 altermagnetic space groups\, 262 of which lack inversion\, consistent with the literature. Furthermore\, nonsymmorphic symmetries\, such as glide mirrors and screw axes\, enforce same-spin degeneracies on the zone boundary. Together with the opposite-spin degeneracies\, they force hourglass band crossings\, creating spin textures beyond the six wave types\, such as an i-wave-like spin winding on a square lattice. Our catalog serves as a guide for finding new altermagnets.\n\nReference: C. Le\, F. Cui\, I.-F. Io\, M. M. Hirschmann\, X. Wu\, and C.-K. Chiu\, arXiv:2607.10857 (2026).
URL:https://qmi.miffanytark.com/event/cm-seminar-catalog-of-altermagnetism-in-magnetic-wallpaper-space-groups-and-nonsymmorphic-altermagnets-dr-ching-kai-chiu-riken/
CATEGORIES:CM Seminar
ATTACH;FMTTYPE=:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Vancouver:20261008T100000
DTEND;TZID=America/Vancouver:20261008T110000
DTSTAMP:20261005T181437Z
CREATED:20261005T181437Z
LAST-MODIFIED:20261005T181437Z
UID:11446-1791453600-1791457200@qmi.miffanytark.com
SUMMARY:CM Seminar: Visualizing atomic scale deformation & de-pinning of a charge density wave
DESCRIPTION:Featured Speaker: Christopher Gutiérrez (UCLA) \nVisualizing atomic scale deformation & de-pinning of a charge density wave\nThe charge density wave (CDW) is a symmetry-broken state of matter that is ubiquitous across quantum materials. Its signature is a periodic modulation of electron charge and lattice ions. In quasi one-dimensional systems\, an applied electric field can distort the CDW before it finally de-pins itself and moves collectively through the crystal. Notably\, this process has never been imaged directly. In this talk\, I will show experiments that combine in-plane drive currents with scanning tunneling microscopy and spectroscopy (STM/STS) to investigate the nanoscale field-response on the surface of a prototypical Peierls CDW material\, K0.3MoO3. By tuning the in-plane drive current\, we directly visualize a hysteretic (“memory”) response in the surface CDW as it plastically deforms before evolving between ordered/disordered states through the annihilation/generation of topological defects (vortices) in the phase of the CDW order parameter. Our results demonstrate that surface CDWs are manipulable with behavior similar to proposed microscopic models of bulk CDW dynamics. \nLocation: BRIM 311\nDate &Time: October 8\, 10:00-11:00am
URL:https://qmi.miffanytark.com/event/cm-seminar-visualizing-atomic-scale-deformation-de-pinning-of-a-charge-density-wave/
CATEGORIES:CM Seminar
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DTSTART;TZID=America/Vancouver:20261015T100000
DTEND;TZID=America/Vancouver:20261015T110000
DTSTAMP:20261014T223316Z
CREATED:20261013T170104Z
LAST-MODIFIED:20261014T223316Z
UID:11447-1792058400-1792062000@qmi.miffanytark.com
SUMMARY:CM Seminar: Two-Dimensional HighTc Superconductivity in Monolayer Cuprates & Beyond
DESCRIPTION:Featured Speaker: Yuanbo Zhang (Fudan University\, Shangehai\, China) \nTwo-Dimensional High-Tc​ Superconductivity in Monolayer Cuprates and Beyond\nCopper oxide high-temperature superconductors share a layered structure\, raising the question of whether superconductivity can emerge in an isolated monolayer. We investigate the electronic structure of monolayer Bi-2212 and Bi-2201\, demonstrating through STM/STS that the full suite of bulk phases—including high-Tc​ superconductivity\, pseudogap\, and charge order—persists in the extreme 2D limit. These results indicate that superconductivity in these materials is essentially a two-dimensional phenomenon. \nHowever\, extending this research to other high-Tc material systems is often hindered by extreme environmental sensitivity. To address this\, we have developed an integrated fabrication platform operating entirely under ultra-high vacuum (with base pressure below 5×10−10 mbar). This system enables the exfoliation and assembly of atomically clean 2D heterostructures\, providing a pristine environment to explore the next generation of 2D high-Tc superconductors. \nLocation: BRIM 311\nDate &Time: October 15\, 10:00-11:00am
URL:https://qmi.miffanytark.com/event/cm-seminar-two-dimensional-high-tc-superconductivity-in-monolayer-cuprates-beyond/
CATEGORIES:CM Seminar
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