Temperature Studies of Raman Spectra in MnBi2Te4 and MnSb2Te4 Magnetic Topological Insulators

Maksimov, A.A.; Tartakovskii, I.I.; Aliev, Z.S.; Amiraslanov, I.R.; Abdullaev, N.A.; Zverev, V.N.; Jahangirli, Zakir; Sklyadneva, I.; Otrokov, M.M.; Mamedov, NAZİM; Chulkov, Evgueni

doi:10.1134/s0021364023602543

Temperature Studies of Raman Spectra in MnBi2Te4 and MnSb2Te4 Magnetic Topological Insulators

Maksimov A., Tartakovskii I., Aliev Z., Amiraslanov I., Abdullaev N., Zverev V., ...daha çox

JETP Letters, vol.118, no.5, pp.357-362, 2023 (SCI-Expanded, Scopus)

Nəşrin Növü: Article / Article
Cild: 118 Say: 5
Nəşr tarixi: 2023
Doi nömrəsi: 10.1134/s0021364023602543
jurnalın adı: JETP Letters
Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, INSPEC
Səhifə sayı: pp.357-362
Açıq Arxiv Kolleksiyası: Məqalə
Adres: Bəli

Qısa məlumat

Raman spectra of magnetic topological crystalline insulators in a wide temperature range including the magnetic ordering region are studied in detail. The anharmonicity parameters and Grüneisen mode parameters of Raman-active phonons in the studied crystals have been determined. It has been shown that the temperature dependence of the frequency of the A(1)1g (~48 cm–1) phonon in MnBi2Te4 coincides within ±0.1 cm–1 with the standard anharmonic model disregarding the spin–phonon coupling. The polarization dependences of Raman spectra in the MnSb2Te4 crystals indicate that Sb and Mn atoms are strongly mixed in them unlike the isostructural MnBi2Te4 crystals.