Binghai Yan - Nonlinear optical responses of Weyl semimetal materials

MPSD Seminar

  • Datum: 28.11.2017
  • Uhrzeit: 14:00 - 15:00
  • Vortragende(r): Binghai Yan
  • Weizmann Institute of Science, Israel
  • Ort: CFEL (Bldg. 99)
  • Raum: Seminar Room III, EG.080
  • Gastgeber: Angel Rubio
 Binghai Yan - Nonlinear optical responses of Weyl semimetal materials
In the band structure of a Weyl semimetal (WSM), the conduction and valence bands cross each linearly through Weyl points that are usually treated as “monopoles” of the Berry curvature. As a second-order response, WSMs were very recently demonstrated to show strong nonlinear optical effects including an exotic nonlinear Hall effect. This is caused by the non-equilibrium distribution of the Berry curvature, described as the “dipole” of the Berry curvature. In this talk, I will talk about our recent computational results on nonlinear response for representative WSM materials TaAs and MoTe2.
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