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Rashba splitting of 100 meV in Au-intercalated graphene on SiC

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arxiv 1510.02291 v1 pith:MPPZDFP2 submitted 2015-10-08 cond-mat.mtrl-sci cond-mat.mes-hall

Rashba splitting of 100 meV in Au-intercalated graphene on SiC

D. Marchenko , A. Varykhalov , J. S\'anchez-Barriga , Th. Seyller , O. Rader This is my paper
classification cond-mat.mtrl-sci cond-mat.mes-hall
keywords grapheneintercalationsplittingau-intercalatedenergygiantrashba-typespin-orbit
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Intercalation of Au can produce giant Rashba-type spin-orbit splittings in graphene but this has not yet been achieved on a semiconductor substrate. For graphene/SiC(0001), Au intercalation yields two phases with different doping. Here, we report the preparation of an almost pure p-type graphene phase after Au intercalation. We observe a 100 meV Rashba-type spin-orbit splitting at 0.9 eV binding energy. We show that this giant splitting is due to hybridization and much more limited in energy and momentum space than for Au-intercalated graphene on Ni.

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