Influence of Impurity Spin Dynamics on Quantum Transport in Epitaxial Graphene.
作者： Samuel Lara-Avila , Sergey Kubatkin , Oleksiy Kashuba , Joshua A Folk , Silvia Lüscher
DOI: 10.1103/PHYSREVLETT.115.106602
关键词:
摘要: 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 a vector magnetic field showing that relaxation, detected using weak-localization analysis, is suppressed by an in-plane B-parallel to, thereby proving it caused at least part spinful scatterers. A nonmonotonic dependence the effective decoherence rate to reveals intricate role scatterers' dynamics forming interference correction conductivity, effect has gone unnoticed earlier weak localization studies.
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