Influence of magnetic ordering on the optical response of the antiferromagnetic topological insulator MnBi2Te4

被引：12

作者：

Kopf, M. ^{[1
]}

Ebad-Allah, J. ^{[1
,2
]}

Lee, S. H. ^{[3
]}

Mao, Z. Q. ^{[3
]}

Kuntscher, C. A. ^{[1
]}

机构：

[1] Augsburg Univ, Inst Phys, Expt Phys 2, D-86159 Augsburg, Germany

[2] Tanta Univ, Dept Phys, Tanta 31527, Egypt

[3] Penn State Univ, Dept Phys, University Pk, PA 16803 USA

来源：

PHYSICAL REVIEW B | 2020年 / 102卷 / 16期

基金：

美国国家科学基金会;

关键词：

Band structure - Manganese compounds - Antiferromagnetism - Mott insulators - Optical correlation - Tellurium compounds - Antimony compounds - Temperature distribution - Bismuth compounds - Infrared spectroscopy - Optical conductivity - Topological insulators;

D O I：

10.1103/PhysRevB.102.165139

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The layered topological insulator MnBi2Te4 has attracted great interest recently due to its intrinsic antiferromagnetic order, potentially hosting various topological phases. By temperature-dependent infrared spectroscopy over a broad frequency range, we studied the changes in the optical conductivity of MnBi2Te4 at the magnetic ordering temperature. The temperature dependence of several optical parameters reveals an anomaly at the magnetic phase transition, which suggests the correlation between the bulk electronic band structure and the magnetism. We relate our findings to recent reports on the temperature dependence of the electronic band structure of MnBi2Te4.

引用

页数：6

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