Giant enhancement of perpendicular magnetic anisotropy and Curie temperature in BiTeI/MnSe2 heterostructures

被引：5

作者：

Liao, Ju-Jian ^{[1
]}

Nie, Yao-Zhuang ^{[1
]}

Wang, Xi-guang ^{[1
]}

Luo, Zi-yan ^{[1
]}

Xia, Qing-lin ^{[1
]}

Xiong, Rui ^{[2
]}

Guo, Guang-hua ^{[1
]}

机构：

[1] Cent South Univ, Sch Phys, Changsha 410083, Peoples R China

[2] Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China

来源：

PHYSICA B-CONDENSED MATTER | 2024年 / 675卷

基金：

中国国家自然科学基金;

关键词：

Heterostructure; Electronic structure; Ferromagnetism; Magnetic anisotropy; First-principles calculation; ULTRASOFT PSEUDOPOTENTIALS; FERROMAGNETISM; DESIGN;

D O I：

10.1016/j.physb.2023.415642

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study the magnetic properties of the monolayer MnSe2 and the bilayer BiTeI/MnSe2 heterostructures using the first-principles calculations. Results show that the monolayer MnSe2 is a half-metal ferromagnet with room Curie temperature and in-plane magnetic anisotropy. The magnetic anisotropy energy originates mainly from the Se atoms. Introduction of strain, especially interlayer coupling in BiTeI/MnSe2 heterostructures make the easy magnetization direction rotate from in-plane to out-of plane and give rise to a substantial perpendicular magnetic anisotropy. In addition, the exchange interactions are enhanced, and a strong Dzyaloshinskii-Moriya interaction is introduced in the BiTeI/MnSe2 heterostructures, which promotes the Curie temperature significantly. The findings in this work provide a way to improve the magnetic properties of two-dimensional magnetic materials and point to the application of the monolayer MnSe2.

引用

页数：9

共 45 条

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