Photovoltaic Hall effect in graphene

Details Photovoltaic Hall effect in graphene Photovoltaic Hall effect in graphene

2008-07-30

arxiv.org/abs/0807.4767v3

Phys. Rev. B 79, 081406 (R) (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.79.081406

Response of electronic systems in intense lights (AC electric fields) to DC source-drain fields is formulated with the Floquet method. We have then applied the formalism to graphene, for which we show that a non-linear effect of a circularly polarized light can open a gap in the Dirac cone, which leads to a photo-induced dc Hall current. This is numerically confirmed for a graphene ribbon attached to electrodes with the Keldysh Green's function.

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