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Phys. Rev. B 79, 081406(R) (2009) [4 pages]

Photovoltaic Hall effect in graphene

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Takashi Oka and Hideo Aoki
Department of Physics, University of Tokyo, Hongo, Tokyo 113-0033, Japan

See Also: Erratum

Received 29 July 2008; revised 15 January 2009; published 23 February 2009

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 nonlinear effect of a circularly polarized light can open a gap in the Dirac cone, which is predicted to lead to a photoinduced dc Hall current. This is numerically confirmed for a graphene ribbon attached to electrodes with the Keldysh Green’s function.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.79.081406
DOI:
10.1103/PhysRevB.79.081406
PACS:
73.43.−f, 72.40.+w, 78.67.−n, 85.60.−q

See Also

Erratum: Takashi Oka and Hideo Aoki, Erratum: Photovoltaic Hall effect in graphene [Phys. Rev. B 79, 081406(R) (2009)], Phys. Rev. B 79, 169901 (2009).