Details

Autor(en) / Beteiligte

• Lara-Avila, Samuel
• Kubatkin, Sergey
• Kashuba, Oleksiy
• Folk, Joshua A
• Lüscher, Silvia
• Yakimova, Rositza
• Janssen, T J B M
• Tzalenchuk, Alexander
• Fal'ko, Vladimir

Titel

Influence of Impurity Spin Dynamics on Quantum Transport in Epitaxial Graphene

Ist Teil von

• Physical review letters, 2015-09, Vol.115 (10), p.106602-106602, Article 106602

Ort / Verlag

United States

Erscheinungsjahr

2015

Link zum Volltext

Quelle

APS_美国物理学会过刊

Beschreibungen/Notizen

• 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.