Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 34: Poster Session I (Graphene; Plasmonics and nanooptics; Coherence and coherent control in nanophotonics and plasmonics)
O 34.24: Poster
Dienstag, 27. März 2012, 18:15–21:45, Poster E
Giant Rashba splitting in graphene/SiC(0001) after Au intercalation — •Dmitry Marchenko1, A. Varykhalov1, J. Sánchez-Barriga1, M. R. Scholz1, Th. Seyller2, and O. Rader1 — 1Helmholtz-Zentrum Berlin — 2Universität Erlangen
We have recently demonstrated a giant spin-orbit splitting in graphene/Ni(111) after intercalation of a Au monolayer. The spin-orbit splitting is by 4 orders of magnitude larger than the intrinsic splitting of graphene. The intercalation approach works also for graphene on SiC(0001) which is one of the most popular substrates for high quality graphene growth. We show that in graphene/SiC the spin splitting of the Dirac-cone is zero, but intercalation of a gold layer under the graphene dramatically increases the splitting up to 120 meV.