Magnetic tuning in a novel half-metallic Ir_(2)TeI_(2) monolayer  

作　　者：Didi Zhao Chenggong Zhang Changwen Zhang Weixiao Ji Shengshi Li Peiji Wang 

机构地区：[1]School of Physics and Technology,Spintronics Institute,University of Jinan,Jinan 250022,China

出　　处：《Journal of Semiconductors》2022年第5期70-78,共9页半导体学报（英文版）

基　　金：supported by the Taishan Scholar Program of Shandong Province(No.ts20190939);National Natural Science Foundation of China(Grant No.62071200,12004137,11804116,52173283);the Natural Science Foundation of Shandong Province(Grant No.ZR2018MA035,ZR2020QA052,ZR2019MA041);Independent Cultivation Program of Innovat ion Team of Jinan City(Grant No.2021GXRC043)。

摘　　要：A two-dimensional(2D) high-temperature ferromagnetic half-metal whose magnetic and electronic properties can be flexibly tuned is required for the application of new spintronics devices. In this paper, we predict a stable Ir_(2)TeI_(2) monolayer with half-metallicity by systematical first-principles calculations. Its ground state is found to exhibit inherent ferromagnetism and strong out-of-plane magnetic anisotropy of up to 1.024 meV per unit cell. The Curie temperature is estimated to be 293 K based on Monte Carlo simulation. Interestingly, a switch of magnetic axis between in-plane and out-of-plane is achievable under hole and electron doping, which allows for the effective control of spin injection/detection in such 2D systems. Furthermore, the employment of biaxial strain can realize the transition between ferromagnetic and antiferromagnetic states. These findings not only broaden the scope of 2D half-metal materials but they also provide an ideal platform for future applications of multifunctional spintronic devices.

关 键 词：two-dimensional materials SPINTRONICS HALF-METAL magnetic anisotropy energy 

分 类 号：O469[理学—凝聚态物理]