TY  - JOUR
AU  - Varykhalov, A.
AU  - Marchenko, D.
AU  - Scholz, M. R.
AU  - Rienks, E. D. L.
AU  - Kim, T. K.
AU  - Bihlmayer, G.
AU  - Sánchez-Barriga, J.
AU  - Rader, O.
TI  - Ir(111) Surface State with Giant Rashba Splitting Persists under Graphene in Air
JO  - Physical review letters
VL  - 108
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-20074
SP  - 066804
PY  - 2012
N1  - This work was supported by SPP 1459 of the Deutsche Forschungsgemeinschaft.
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000300101500013
DO  - DOI:10.1103/PhysRevLett.108.066804
UR  - https://juser.fz-juelich.de/record/20074
ER  -