Raman Scattering and Spin–Phonon Coupling in Crystals of the Magnetic Topological Insulator MnBi2Te4
Abstract
Raman spectra of MnBi 2 Te 4 magnetic topological insulator crystals have been experimentally studied at temperatures from liquid helium to room temperature. Features of the behavior of a phonon with the $$A_{{1g}}^{2}$$ symmetry in MnBi 2 Te 4 at temperatures below and above the antiferromagnetic phase transition temperature has been discovered and studied in detail for the first time. These features demonstrate the strong influence of the spin–phonon interaction with the magnetic degrees of freedom of the topological insulator on the frequency and intensity of the phonon.
Fields of Study & Subjects
Topological Materials and Phenomena
Rare-earth and actinide compounds
Advanced Thermoelectric Materials and Devices
Publication details
- Journal / source
- Journal of Experimental and Theoretical Physics Letters
- Publisher
- Pleiades Publishing Ltd
- Volume
- 123
- Issue
- 8
- Pages
- 535–539
- Publication date
- 1 April 2026
- Language
- EN