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Topological magnon bands and effective Hamiltonians for periodically driven systems 
Thursday, 18 July 2019, 12:00
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Topological magnon bands and effective Hamiltonians for periodically driven systems

Gregory A. Fiete, Northeastern University, Boston, USA

The effect of spin-orbit coupling in condensed matter systems has received intense study over the past decade, most notably in the context of topological band insulators where electron-electron interactions are not essential for the topological properties. In this talk, I will focus on the opposite limit of strong electronic correlations with spin-orbit coupling.
I will describe two different (materials motivated) two-dimensional models in which the spin-orbit coupling leads to topological band structure in the magnètic excitations. In the second part of the talk,
I will turn to recent work describing an approach to achieving effective time-independent Hamiltonians for periodically driven, interacting many-particle systems. The method agrees with the Magnus expansion in the high frequency limit, but appears to also work well in the strong-driving, low-frequency límit.

Location ICN2 Seminar Hall, ICN2 Building, UAB
Contact This email address is being protected from spambots. You need JavaScript enabled to view it.
https://icn2.cat/en/events/eventdetail/1118/topological-magnon-bands-and-effective-hamiltonians-for-periodically-driven-systems

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