Photo-induced Hall Effect in Graphene -- Effect of Boundary Types

Details Photo-induced Hall Effect in Graphene -- Effect of Boundary Types Photo-induced Hall Effect in Graphene -- Effect of Boundary Types

2009-03-25

arxiv.org/abs/0903.4220v1

Journal of Physics: Conference Series 148 (2009) 012061

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Yamada Conference LXIII: PIPT 2008

Scientific paper

10.1088/1742-6596/148/1/012061

We theoretically predict, with the Keldysh Green's function combined with the Floquet method, that the AC electric field of a circularly polarized light should induce a Hall effect, in the absence of uniform magnetic fields, in graphene with a pair of Dirac dispersions. Although the Hall coefficient is not quantized, the dynamical gap generated by the AC field and the associated Hall effect bear a topological origin which can be traced back to the Dirac cones. We also study the dependence on boundary conditions. The required AC field strength is estimated to be realistic.

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