TY  - JOUR
AU  - Hirahara, T.
AU  - Nagao, T.
AU  - Matsuda, I.
AU  - Bihlmayer, G.
AU  - Chulkov, E. V.
AU  - Koroteev, S. B.
AU  - Echenique, P. M.
AU  - Saito, M.
AU  - Hasagawa, S.
TI  - Role of Spin-Orbit Coupling and Hybridization Effects in the Electronic Structure of Ultrathin Bi Films
JO  - Physical review letters
VL  - 97
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-52975
SP  - 146803
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - The electronic structure of Bi(001) ultrathin films (thickness >= 7 bilayers) on Si(111)-7x7 was studied by angle-resolved photoemission spectroscopy and first-principles calculations. In contrast with the semimetallic nature of bulk Bi, both the experiment and theory demonstrate the metallic character of the films with the Fermi surface formed by spin-orbit-split surface states (SSs) showing little thickness dependence. Below the Fermi level, we clearly detected quantum well states (QWSs) at the M ($) over bar point, which were surprisingly found to be non-spin-orbit split; the films are "electronically symmetric" despite the obvious structural nonequivalence of the top and bottom interfaces. We found that the SSs hybridize with the QWSs near M ($) over bar and lose their spin-orbit-split character.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000241057100060
DO  - DOI:10.1103/PhysRevLett.97.146803
UR  - https://juser.fz-juelich.de/record/52975
ER  -