Experimental evidence from both spin-valve and quantum transport measurements points towards unexpectedly fast spin relaxation in graphene. We report magnetotransport studies of epitaxial graphene on SiC in a vector magnetic field showing that spin relaxation, detected using weak-localisation analysis, is suppressed by an in-plane magnetic field, B∥, and thereby proving that it is caused at least in part by spinful scatterers. A non-monotonic dependence of effective decoherence rate on B∥ reveals the intricate role of scatterers' spin dynamics in forming the interference correction to conductivity, an effect that has gone unnoticed in earlier weak localisation studies
@article{arxiv.1507.03841,
title = {Influence of impurity spin dynamics on quantum transport in epitaxial graphene},
author = {Samuel Lara-Avila and Sergey Kubatkin and Oleksiy Kashuba and Joshua A. Folk and Silvia Lüscher and Rositza Yakimova and T. J. B. M. Janssen and Alexander Tzalenchuk and Vladimir Fal'ko},
journal= {arXiv preprint arXiv:1507.03841},
year = {2016}
}