%0 Journal Article
%A Varykhalov, A.
%A Marchenko, D.
%A Scholz, M. R.
%A Rienks, E. D. L.
%A Kim, T. K.
%A Bihlmayer, G.
%A Sánchez-Barriga, J.
%A Rader, O.
%T Ir(111) Surface State with Giant Rashba Splitting Persists under Graphene in Air
%J Physical review letters
%V 108
%@ 0031-9007
%C College Park, Md.
%I APS
%M PreJuSER-20074
%P 066804
%D 2012
%Z This work was supported by SPP 1459 of the Deutsche Forschungsgemeinschaft.
%X We reveal a giant Rashba effect (alpha(R) approximate to 1.3 eV angstrom) on a surface state of Ir(111) by angle-resolved photoemission and by density functional theory. It is demonstrated that the existence of the surface state, its spin polarization, and the size of its Rashba-type spin-orbit splitting remain unaffected when Ir is covered with graphene. The graphene protection is, in turn, sufficient for the spin-split surface state to survive in ambient atmosphere. We discuss this result along with indications for a topological protection of the surface state.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000300101500013
%R 10.1103/PhysRevLett.108.066804
%U https://juser.fz-juelich.de/record/20074