Anharmonicity of Lattice Vibrations in Bi2Se3 Single Crystals
- Authors: Badalova Z.I.1, Abdullayev N.A.1, Azhdarov G.H.1, Aliguliyeva K.V.1, Gahramanov S.S.1, Nemov S.A.2, Mamedov N.T.1
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Affiliations:
- Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan
- Peter the Great Saint-Petersburg Polytechnic University
- Issue: Vol 53, No 3 (2019)
- Pages: 291-295
- Section: Nonelectronic Properties of Semiconductors (Atomic Structure, Diffusion)
- URL: https://journals.rcsi.science/1063-7826/article/view/205805
- DOI: https://doi.org/10.1134/S1063782619030035
- ID: 205805
Cite item
Abstract
The temperature dependences of the Raman-active frequencies \(E_{g}^{2}\), \(A_{{1g}}^{2}\) in layered Bi2Se3 single crystals are studied. The contribution of the thermal expansion to a temperature variation in the frequencies is determined. The decay of the anisotropy of the elastic properties in layered Bi2Se3 single crystals due to strong spin–orbit coupling is shown. The Gruneisen-mode parameters for phonons \(E_{g}^{2}\) and \(A_{{1g}}^{2}\) are calculated. Systematic features in the dependences of vibrational frequencies on the atomic masses in layered Bi2Te3, Bi2Se3, and Sb2Te3 single crystals are determined.
About the authors
Z. I. Badalova
Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan
Email: abnadir@mail.ru
Azerbaijan, Baku, Az-1143
N. A. Abdullayev
Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan
Author for correspondence.
Email: abnadir@mail.ru
Azerbaijan, Baku, Az-1143
G. H. Azhdarov
Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan
Email: abnadir@mail.ru
Azerbaijan, Baku, Az-1143
Kh. V. Aliguliyeva
Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan
Email: abnadir@mail.ru
Azerbaijan, Baku, Az-1143
S. Sh. Gahramanov
Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan
Email: abnadir@mail.ru
Azerbaijan, Baku, Az-1143
S. A. Nemov
Peter the Great Saint-Petersburg Polytechnic University
Email: abnadir@mail.ru
Russian Federation, St. Petersburg, 195251
N. T. Mamedov
Abdullaev Institute of Physics, National Academy of Sciences of Azerbaijan
Email: abnadir@mail.ru
Azerbaijan, Baku, Az-1143