- Tytuł:
- Study of Spin-Orbit Coupling Effect on Bismuth (111) Bilayer
- Autorzy:
-
Bieniek, M.
Woźniak, T.
Potasz, P. - Powiązania:
- https://bibliotekanauki.pl/articles/1398639.pdf
- Data publikacji:
- 2016-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
73.22.Dj
74.20.Pq - Opis:
- Band inversion process in Bi(111) bilayer is studied using many-orbital tight-binding model, supported by the density-functional theory calculations, with a controllable spin-orbit coupling constant in tight-binding model. This effect is important in order to verify a topological nature of this material. We show that after closing of the energy gap leading to crossing of the valence and conduction bands, the second band inversion occurs within a valence band. We analyze orbital composition and spin textures of bands within different regimes. Around a Γ point, all spins align in one direction before the first band inversion. Moreover, a change of signs for some spin components after a band inversion is noticed. After the second band inversion, a significant change of orbital contribution of the top of the valence band is observed.
- Źródło:
-
Acta Physica Polonica A; 2016, 130, 2; 609-612
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł