Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Influence of Impurity Spin Dynamics on Quantum Transport in Epitaxial Graphene
AU - Lara-Avila, Samuel
AU - Kubatkin, Sergey
AU - Kashuba, Oleksiy Mykolayovych
AU - Folk, Joshua
AU - Luscher, Silvia
AU - Yakimova, Rositza
AU - Janssen, T. J. B. M.
AU - Tzalenchuk, Alexander
AU - Falko, Vladimir
PY - 2015/9/3
Y1 - 2015/9/3
N2 - 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-localization 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 nonmonotonic dependence of the effective decoherence rate on B∥ reveals the intricate role of the scatterers’ spin dynamics in forming the interference correction to the conductivity, an effect that has gone unnoticed in earlier weak localization studies.
AB - 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-localization 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 nonmonotonic dependence of the effective decoherence rate on B∥ reveals the intricate role of the scatterers’ spin dynamics in forming the interference correction to the conductivity, an effect that has gone unnoticed in earlier weak localization studies.
U2 - 10.1103/PhysRevLett.115.106602
DO - 10.1103/PhysRevLett.115.106602
M3 - Journal article
VL - 115
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 10
M1 - 106602
ER -