Séminaire du LPTMS: Andrei Bernevig
Topological insulators and semimetals
Andrei Bernevig (Princeton University, USA)
I will review topological states of matter with specific emphasis on the symmetry-protected topological insulators in different dimensions. I will show how Majorana states can be realized at the end of topological chains with fermionic parity, as well as in vortex cores in 2D chiral superconductors. I will then show how some of the simplest tensor Braided categories come out of simple, intuitive physical arguments about braiding vortices. I will present a slew of topological insulators protected by time reversal, symmorphic, and then nonsymmorphic symmetries. At then end, I will present new work aiming to provide a complete and comprehensive classification of all topological insulators existent in crystals.
Date/Time : 06/12/2016 - 11:00 - 12:00
Location : LPTMS, salle 201, 2ème étage, Bât 100, Campus d'Orsay
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