期刊
PHYSICAL REVIEW LETTERS
卷 104, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.156805
关键词
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资金
- KAKENHI [18360018, 19340078]
- Japan Society for the Promotion of Science (JSPS)
- European Science Foundation
- Government of Italy and the Government of Japan
- Grants-in-Aid for Scientific Research [19340078, 18360018] Funding Source: KAKEN
The electronic structure of ultrathin Ag(111) films covered with a root 3 x root 3-Bi/Ag ordered alloy was investigated by means of spin-and angle-resolved photoemission spectroscopy. Surface-state (SS) bands, spin split by the Rashba interaction, selectively couple to the quantum-well state (QWS) bands, originally spin degenerate, in the metal film. Gaps are found to open between QWS and SS with parallel spins, while free-electron-like QWS dispersions are observed for antiparallel spin configurations. The present results demonstrate that in a nonmagnetic metal film the spin degeneracy of the valence levels can be lifted by hybridization with Rashba-type SS bands.
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