%0 Journal Article
%A Bihlmayer, G.
%A Blügel, S.
%A Chulkov, E. V.
%T Enhanced Rashba spin-orbit splitting in Bi/Ag(111) and Pb/Ag(111) surface alloys from first principles
%J Physical review / B
%V 75
%N 19
%@ 1098-0121
%C College Park, Md.
%I APS
%M PreJuSER-56541
%P 195414
%D 2007
%Z Record converted from VDB: 12.11.2012
%X 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.
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000246890800139
%R 10.1103/PhysRevB.75.195414
%U https://juser.fz-juelich.de/record/56541