ABSTRACT
Raman scattering in MnBi2Te4 single crystals was studied. The contributions of phonon-phonon interaction and thermal expansion in the change of Raman
frequencies with temperature have been determined.
Keywords: Raman scattering, Raman-active phonons, thermal expansion, anharmonicity, elastic modulus
PACS: 63.20.kg, 64.70.kg, 65.40.De, 78.30._j
DOI:-
Received: 01.12.2023
AUTHORS & AFFILIATIONS
1. Institute of Physics Ministry of Science and Education Republic of Azerbaijan, 131 H.Javid ave, Baku, AZ-1143
2. Sumgait State University, Sumgait, Azerbaijan, 1 Baku street, 43, AZ 5008
3. Baku State University, 23 Z.Khalilov St., Baku, AZ 1148, Azerbaijan
E-mail: abnadir@mail.ru
Graphics and Images
Fig.1-2
|
REFERENCIES
[1] R. Zallen, E.M. Conwell. The effect of temperature on libron frequencies in molecular crystals: Implications for TTF-TCNQ. Solid State Communications, 1979, vol. 31, is. 8, pp. 557-561.
[2] N.A. Abdullayev, L.N. Alieva, R.A. Suleimanov. Thermal expansion and temperature dependence of Raman active modes in layer semiconductors. Phys. stat. sol. (b), 1985, vol. 129, is. 1, pp. K13-K16.
[3] A.A. Maksimov, I.I. Tartakovskii, Z.S. Aliev, I.R. Amiraslanov, N.A. Abdullayev, V.N. Zverev, Z.A. Jahangirli, I.Yu. Sklyadneva, M.M. Otrokov, N.T. Mamedov and E.V. Chulkov. JETP Letters, 2023, vol. 118, № 5, pp. 357–362.
[4] L.M. Pavlova, Yu.I. Shtern, and R.E. Mironov. Thermal Expansion of Bismuth Telluride. High Temperature, 2011, vol. 49, № 3, pp. 369–379.
[5] C. Pei, Y. Xia, J. Wu, Y. Zhao, L. Gao, T. Ying, B. Gao, N. Li, W. Yang, D. Zhang, H. Gou, Y. Chen, H. Hosono, G. Li, Y. Qi. Pressure-Induced Topological and Structural Phase Transitions in an Antiferromagnetic Topological Insulator. Chin. Phys. Lett., 2020, vol. 37, № 6, p. 066401.
|