自旋电子学
凝聚态物理
铁磁性
居里温度
反铁磁性
单层
材料科学
磁性
应变工程
自旋极化
相变
纳米技术
物理
电子
量子力学
作者
Fei Li,Yulu Ren,Wenhui Wan,Yong Liu,Yanfeng Ge
出处
期刊:AIP Advances
[American Institute of Physics]
日期:2021-11-01
卷期号:11 (11)
被引量:4
摘要
Two-dimensional intrinsic magnetic materials with high Curie temperature (Tc) coexisting with 100% spin polarization are highly desirable for realizing promising spintronic devices. In the present work, the intrinsic magnetism of monolayer square CrBr2 is predicted by using first-principles calculations. The monolayer CrBr2 is an intrinsic ferromagnetic half-metal with the half-metallic gap of 1.58 eV. Monte Carlo simulations based on the Heisenberg model estimate Tc as 212 K. Furthermore, the large compressive strain makes CrBr2 undergo ferromagnetic–antiferromagnetic phase transition when the biaxial tensile strain larger than 9.3% leads to the emergence of semiconducting electronic structures. Our results show that the intrinsic half-metal with a high Tc and controllable magnetic properties endow monolayer square CrBr2 as a potential material for spintronic applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI