Investigation of Surface Magnetism in Systems Based on MnBi2Te4 Using the Magneto-Optical Kerr Effect

MnBi 2 Te 4 , Mn(Bi,Sb) 2 Te 4 , and MnBi 2 Te 4 (Bi 2 Te 3 ) m ( m ≥ 1) are assigned to magnetic topological insulators. Successful application of these materials in nanoelectronic devices calls for comprehensive investigation of their electronic structure and magnetic properties in dependence of t...

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Bibliographic Details
Published in:Crystallography reports 2024-02, Vol.69 (1), p.79-84
Main Authors: Glazkova, D. A., Estyunin, D. A., Tarasov, A. S., Kosyrev, N. N., Komarov, V. A., Patrin, G. S., Golyashov, V. A., Tereshchenko, O. E., Kokh, K. A., Koroleva, A. V., Shikin, A. M.
Format: Article
Language:English
Subjects:
Antimony
Atomic properties
Bismuth tellurides
Crystallography and Scattering Methods
Electronic structure
Kerr magnetooptical effect
Magnetic properties
Magnetic transitions
Manganese
Nanoelectronics
Nanotechnology devices
Physics
Physics and Astronomy
Surface and Thin Films
Topological insulators
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Summary:MnBi 2 Te 4 , Mn(Bi,Sb) 2 Te 4 , and MnBi 2 Te 4 (Bi 2 Te 3 ) m ( m ≥ 1) are assigned to magnetic topological insulators. Successful application of these materials in nanoelectronic devices calls for comprehensive investigation of their electronic structure and magnetic properties in dependence of the Bi/Sb atomic ratio and the number m of Bi 2 Te 3 blocks. The magnetic properties of the surface of MnBi 2 Te 4 , MnBi 4 Te 7 , and Mn(Bi Sb x ) 2 Te 4 compounds ( x = 0.43 and 0.32) have been studied using the magneto-optical Kerr effect. It is shown that the temperatures of magnetic transitions on the surface and in the bulk of MnBi 4 Te 7 and Mn(Bi, Sb) 2 Te 4 differ significantly.
ISSN:1063-7745
1562-689X
DOI:10.1134/S1063774523601296