Magnetic Anisotropy and Jahn-Teller Effect in Ferromagnetic Two-Dimensional CrGa2Te4

被引：2

作者：

Jiang, Chenghuan ^{[1
]}

Lu, Kangjun ^{[2
]}

Wang, Ruqian ^{[2
]}

Chen, Qian ^{[2
]}

Wang, Jinlan ^{[2
]}

机构：

[1] Nanjing Inst Technol, Sch Math & Phys, Nanjing 211167, Peoples R China

[2] Southeast Univ, Sch Phys, Nanjing 211189, Peoples R China

来源：

ACS APPLIED ELECTRONIC MATERIALS | 2022年

关键词：

two-dimensional magnets; magnetic anisotropy; Curie temperatures; spintronics; density functional theory; SEMICONDUCTORS; SPINTRONICS; CRYSTAL;

D O I：

10.1021/acsaelm.2c00433

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The transition metal (TM)-based two-dimensional (2D) materials show great promise for realizing ultrathin spintronic devices because of their structural and magnetic properties. In this work, we predict the ferromagnetic ground state of the CrGa2Te4 monolayer with an alpha-FeGa2S4-1T type phase. The first-principles calculations and Monte Carlo simulations indicate that this monolayer is a ferromagnetic half-metal possessing a Curie temperature of 277 K. It is revealed in this system that the further splitting of Cr-e(g) orbitals results in a high-spin configuration of Cr2+ with an out-of-plane easy axis. A physical picture of the magneto-crystalline anisotropy affected by the Jahn-Teller distortion in the GrCa(2)Te(4) monolayer is obtained. This work expands our understanding of the magnetic phenomena to 2D octahedral coordinated crystals.

引用

页码：3220 / 3225

页数：6

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