Email this article Increasing Spin-Orbital Coupling at Relativistic Exchange Interaction of Electron-Hole Pairs in Graphene
- Authors: Grushevskaya H.V.1, Krylov G.G.1
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Affiliations:
- Belarusian State University
- Issue: Vol 52, No 14 (2018)
- Pages: 1879-1881
- Section: Graphene
- URL: https://bakhtiniada.ru/1063-7826/article/view/205115
- DOI: https://doi.org/10.1134/S1063782618140129
- ID: 205115
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Abstract
Graphene model with a high-energy k · p-Hamiltonian has been proposed. A feature of the model is the increasing spin-orbital coupling at relativistic exchange interactions of electron-hole pairs. Topological nontriviality of the model has been established by non-abelian Zak phase calculations. It has been shown that the homotopy group of the model is Z2 × Z4.
About the authors
H. V. Grushevskaya
Belarusian State University
Email: krylov@bsu.by
Belarus, Minsk
G. G. Krylov
Belarusian State University
Author for correspondence.
Email: krylov@bsu.by
Belarus, Minsk
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