• 文献标题:   Frequency dependence of the light-induced Hall effect in dissipative graphene
  • 文献类型:   Article
  • 作  者:   NUSKE M, MATHEY L
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1103/PhysRevB.104.224305
  • 出版年:   2021

▎ 摘  要

We determine the Hall conductivity of light-driven graphene, with a specific focus on its frequency dependence, and compare it to the static effective approximation, based on Floquet states. This approximation gives the Haldane model as the effective model for light-driven graphene, with a gapped spectrum and a quantized Hall conductivity of -2e(2)/h. We simulate both the light-driven and the effective model, and explicitly include the dissipative environment in our simulations. We investigate the effect of different driving regimes and dissipation strengths on the Hall conductivity in graphene. As a central result, the Hall conductivity of the light-driven system is not well approximated by the effective model, except for a regime of intermediate driving frequencies and small dissipation where the Hall conductivity contribution of the Dirac point approximately recovers the quantized value of -2e(2)/h, as well as in the transient dynamics for weak dissipation.