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Discovery of novel quantum phenomena in kagome materials including superconductors

Date and Time: Tuesday, November 30, 2021, 01:30pm -
Location: Zoom

Speaker: M. Zahid Hasan (Princeton University)


Electrons organize in ways to give rise to distinct phases of matter such as insulators, metals, magnets or superfluid or superconductors. In the last ten years or so, it has become increasingly clear that in addition to the symmetry-based classification of matter, topological consideration of wavefunctions plays a key role in determining distinct or new quantum phases of matter in magnetic materials. In this talk, I briefly introduce realizations of Chern, Weyl and Kagome magnets in spin-orbit materials. As examples, I present how tuning a topological insulator whose surface hosts an unpaired Dirac fermion can give rise to emergent Weyl fermion and “fractional” Fermi surfaces and leading to strongly correlated magnetic, Chern or many-body states of matter in kagome lattice systems. These “magnetic topological quantum matter” harbor novel and unprecedented properties that may lead to the development of next generation quantum technologies.

Host:  Piers Coleman

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