Bursty star formation: physical drivers and implications for JWST observations of high-redshift galaxies
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Condensed Matter Seminar
Spin-orbit coupled graphene multilayers: correlations, superconductivity and topology
Abstract: Crystalline graphene multilayers present a rich playground to explore correlated electronic phenomena in an ultra-clean setting, free of the inhomogeneities ubiquitous in their twisted counterparts. For instance, Bernal bilayer graphene (BLG) and rhombohedral trilayer graphene both exhibit several symmetry-broken metallic phases at low temperature, as well as superconductors with different pairing symmetries. Moreover, placing a WSe2 monolayer on BLG was shown to promote Cooper pairing to an extraordinary degree, with an order-of-magnitude enhancement of Tc [1].
Pushing atoms by picometers in low dimensional materials
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Symmetries as Ground States of Local Hamiltonians
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From quantum many-body scars to optimal steering and energy superdiffusion
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Correlated Chern insulator in two-dimensional materials
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Correlated Electronic States in Moiré Superlattices of Semiconducting Monolayers
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Metastable Kitaev Spin Liquids and Two Spin Nematic Order
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Emergent vortex topologies in trivial s-wave superconductors
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Quantum Metric in 2D Superconductors and Exciton Condensates
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In the past two decades some of the most interesting developments in condensed matter physics have resulted form the careful treatment of the effects arising from the Berry curvature of many-body ground states. The Berry curvature can be thought as the imaginary part of a complex tensor. The real part of this tensor is the quantum metric. In this talk I will show how the quantum metric affects the properties of superconductivity and exciton condensates in 2D flat band systems, and present some results specific to the case of twisted bilayer graphene.
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