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SUMMARY:CM Seminar: Superconductivity in twisted bilayer WSe2\, Cory Dean\, Columbia University
DESCRIPTION:Speaker: Cory Dean\, Columbia University \nTime: 10:00-11:00am \nLocation: BRIM 311 \nTitle: Superconductivity in twisted bilayer WSe2 \nAbstract: Superconductivity in twisted bilayer and twisted trilayer graphene results from an interplay between interlayer coupling and a moiré superlattice that gives rise to low-energy flat bands with strong correlations. Similar flat bands have been explored in lattice-mismatched and or twisted heterostructures of other two-dimensional materials beyond graphene such as transition metal dichalcogenides (TMDs). However\, despite a wide range of correlated phenomenon robust demonstration of superconductivity in the TMDs remained absent and its possibility an open question. In my talk I will present our recent observation of superconductivity in twisted bilayer WSe2\, appearing adjacent to a magnetic ordering state.  The ability to vary the twist angle provides a unique capability to modulate the interacting strength in this system and in recent experiments we observe a systematic evolution of the magnetic and superconducting phases.  I will discuss our current understanding of the phase space of correlated states in this moire system\, and how this relates to conventional examples of unconventional superconductors.
URL:https://qmi.miffanytark.com/event/cm-seminar-cory-dean-columbia-university/
CATEGORIES:CM Seminar
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