Spin transport in bilayer graphene

In this work, we perform a study of spin transport in bilayer graphene using semiclassical Monte Carlo simulation. Both the D'yakonov-Perel' (DP) and Elliot-Yafet (EY) mechanisms for spin relaxation are considered. A vertical field of varying magnitude is applied across the bilayer and the dependence of the spin relaxation length on the applied field is considered. It is found that the spin relaxation length is a function of the applied vertical field, due to the effects of the EY and DP mechanisms, and the relaxation length reaches a maximum for a particular value of the vertical field. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3525650]