Berlin 2012 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 4: Graphene I

O 4.9: Vortrag

Montag, 26. März 2012, 12:30–12:45, MA 041

Extrinsic spin-orbit splitting in graphene on Ir(111) adjustable by interface chirality — •Dmitry Marchenko, J. Sánchez-Barriga, M. R. Scholz, O. Rader, and A. Varykhalov — Helmholtz-Zentrum Berlin

By means of spin- and angle-resolved photoemission we reveal a giant Rashba-type spin-orbit splitting in the π-band of graphene grown on Ir(111). We demonstrate that the magnitude of the splitting depends on the strength of the chemical interaction between graphene and iridium and can be regulated through the mutual rotational displacement of the graphene layer and the Ir(111) substrate.