TY  - JOUR
AU  - Bihlmayer, G.
AU  - Blügel, S.
AU  - Chulkov, E. V.
TI  - Enhanced Rashba spin-orbit splitting in Bi/Ag(111) and Pb/Ag(111) surface alloys from first principles
JO  - Physical review / B
VL  - 75
IS  - 19
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-56541
SP  - 195414
PY  - 2007
N1  - Record converted from VDB: 12.11.2012
AB  - We present first-principles calculations of a (root 3x root 3) R30 degrees Bi/Ag (111)-ordered surface alloy, which has recently been investigated experimentally using angle-resolved photoemission spectroscopy. The surface states in the L-projected bulk band gap show a Rashba-type spin-orbit splitting which is three times larger than what has been observed on a clean Bi (111) surface. This large enhancement can be explained by the strong distortion of the surface-state wave function which is caused by the substantial outward buckling of the Bi atom. Also, in a similar surface alloy, Pb/Ag (111), a strong Rashba-type splitting was found by our calculations. The comparison to the experimental data is more difficult due to the presence of a second, close-by surface state. We discuss the dependence of the two-dimensional band structure on the surface corrugation and compare to the experimental findings.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000246890800139
DO  - DOI:10.1103/PhysRevB.75.195414
UR  - https://juser.fz-juelich.de/record/56541
ER  -