Spin-Orbit-Mediated Spin Relaxation in Graphene
Mesoscale and Nanoscale Physics
2015-05-13 v3 Materials Science
Abstract
We investigate how spins relax in intrinsic graphene. The spin-orbit coupling arises from the band structure and is enhanced by ripples. The orbital motion is influenced by scattering centers and ripple-induced gauge fields. Spin relaxation due to Elliot-Yafet and Dyakonov-Perel mechanisms and gauge fields in combination with spin-orbit coupling are discussed. In intrinsic graphene, the Dyakonov-Perel mechanism and spin flip due to gauge fields dominate and the spin-flip relaxation time is inversely proportional to the elastic scattering time. The spin relaxation anisotropy depends on an intricate competition between these mechanisms. Experimental consequences are discussed.
Cite
@article{arxiv.0812.1921,
title = {Spin-Orbit-Mediated Spin Relaxation in Graphene},
author = {D. Huertas-Hernando and F. Guinea and A. Brataas},
journal= {arXiv preprint arXiv:0812.1921},
year = {2015}
}
Comments
Final published version