1. Light-induced valley polarization in interacting and nonlinear Weyl semimetals.
- Author
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Bertrand, Simon, Garate, Ion, and Côté, René
- Subjects
- *
COULOMB functions , *SEMIMETALS , *VORTEX motion - Abstract
It has been recently predicted that the interplay between Coulomb interactions and Berry curvature can produce interesting optical phenomena in topologically nontrivial two-dimensional insulators. Here, we present a theory of the interband optical absorption for three-dimensional, doped Weyl semimetals. We find that the Berry curvature, Coulomb interactions, and the nonlinearity in the single-particle energy spectrum can together enable a light-induced valley polarization. We support and supplement our numerical results with an analytical toy model calculation, which unveils topologically nontrivial Mahan excitons with nonzero vorticity. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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