Spin dephasing and pumping in graphene due to random spin-orbit interaction
Mesoscale and Nanoscale Physics
2015-05-20 v1
Abstract
We consider spin effects related to the random spin-orbit interaction in graphene. Such a random interaction can result from the presence of ripples and/or other inhomogeneities at the graphene surface. We show that the random spin-orbit interaction generally reduces the spin dephasing (relaxation) time, even if the interaction vanishes on average. Moreover, the random spin-orbit coupling also allows for spin manipulation with an external electric field. Due to the spin-flip interband as well as intraband optical transitions, the spin density can be effectively generated by periodic electric field in a relatively broad range of frequencies.
Cite
@article{arxiv.1012.4757,
title = {Spin dephasing and pumping in graphene due to random spin-orbit interaction},
author = {V. K. Dugaev and E. Ya. Sherman and J. Barnas},
journal= {arXiv preprint arXiv:1012.4757},
year = {2015}
}
Comments
9 pages, 7 figures