Photovoltaic Berry curvature in the honeycomb lattice

Details Photovoltaic Berry curvature in the honeycomb lattice Photovoltaic Berry curvature in the honeycomb lattice

2009-05-26

arxiv.org/abs/0905.4191v2

J. Phys.: Conf. Ser. 200 062017, (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages

Scientific paper

Photovoltaic Hall effect -- the Hall effect induced by intense, circularly-polarized light in the absence of static magnetic fields -- has been proposed in Phys. Rev. B 79, 081406R (2009) for graphene where a massless Dirac dispersion is realized. The photovoltaic Berry curvature (a nonequilibrium extension of the standard Berry curvature) is the key quantity to understand this effect, which appears in the Kubo formula extended to Hall transport in the presence of strong AC field backgrounds. Here we elaborate the properties of the photovoltaic curvature such as the frequency and field strength dependence in the honeycomb lattice.

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