1. Tight-binding theory of surface spin states on bismuth thin films.
- Author
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Kazuo Saito, Hirokatsu Sawahata, Takashi Komine, and Tomosuke Aono
- Subjects
- *
SURFACES (Physics) , *ELECTRON spin states , *BISMUTH , *THIN films , *PHOTOELECTRON spectroscopy , *SURFACE states - Abstract
The surface spin states for bismuth thin films are investigated using an sp³ tight-binding model. The model explains most experimental observations using angle-resolved photoemission spectroscopy, including the Fermi surface, the band structure with Rashba spin splitting, and the quantum confinement in the energy band gap of the surface states. A large out-of-plane spin component also appears. The surface states penetrate inside the film to within approximately a few bilayers near the Brillouin-zone center, whereas they reach the center of the film near the Brillouin-zone boundary. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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