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

期刊论文
发表日期：

2024年2月1日

查看全文

D. A. Glazkova,
D. A. Estyunin,
A. S. Tarasov,
N. N. Kosyrev,
V. A. Komarov,
G. S. Patrin,
V. A. Golyashov,
O. E. Tereshchenko,
K. A. Kokh,
A. V. Koroleva,
A. M. Shikin

摘要

Abstract

MnBi₂Te₄, Mn(Bi,Sb)₂Te₄, and MnBi₂Te₄(Bi₂Te₃)_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 Bi₂Te₃ blocks. The magnetic properties of the surface of MnBi₂Te₄, MnBi₄Te₇, and Mn(Bi \(_{{1-x}}\) Sb_x)₂Te₄ 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 MnBi₄Te₇ and Mn(Bi, Sb)₂Te₄ differ significantly.

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

摘要

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