We analyze theoretically optical generation of a spin-polarized charge current (photogalvanic effect) and spin polarization in graphene with Rashba spin-orbit coupling. An external magnetic field is applied in the graphene plane, which plays a crucial role in the mechanism of current generation. We predict a highly efficient resonant-like photogalvanic effect in a narrow frequency range which is determined by the magnetic field. A relatively less efficient photogalvanic effect appears in a broader frequency range, determined by the electron concentration and spin-orbit coupling strength.
@article{arxiv.1502.05683,
title = {Enhanced photogalvanic effect in graphene due to Rashba spin-orbit coupling},
author = {M. Inglot and V. K. Dugaev and E. Ya. Sherman and J. Barnaś},
journal= {arXiv preprint arXiv:1502.05683},
year = {2015}
}