在CrSX (X = Cl, Br, I) 半导体单层中产生孔诱导垂直磁异性和高基里温度
Ruilin Han1, Xiaomin Xue2, Yu Yan3
1School of Physics and Electronic Engineering, Shanxi University, Taiyuan 030006, China.
孔剂增强2D CrSX (X=Cl, Br, I) 铁磁体中的磁性异构和基里温度. 这一过程将它们转化为半金属和金属,非常适合用于自旋电子设备.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 量子化学 是一个量子化学.
背景情况:
- 二维 (2D) 内在铁磁铁对于自旋器件至关重要,它需要很大的垂直磁性异性质 (PMA) 和高基里温度 (TC).
- 范德瓦尔斯分层的CrSX (X = Cl, Br, I) 材料正在探索它们的磁性特性.
研究的目的:
- 研究载体兴奋剂对2D CrSX (X = Cl, Br, I) 铁磁体电子和磁性特性的影响.
- 为了确定洞中兴奋剂是否可以增强PMA和TC用于自旋电子应用.
主要方法:
- 使用第一原则计算来模拟和分析电子带结构和磁性特性.
- 在这项研究中,系统地改变了孔中兴奋剂度,以观察磁性异性质能量 (MAE) 和基里温度 (TC) 的变化.
主要成果:
- 穿孔兴奋剂显著增加了磁性异构能量 (MAE),临界值达到57,133和1597μeV/u.c. 对于CrSCl,CrSBr和CrSI,分别使用.
- 费米水平发生变化,将磁性半导体单层转化为半金属,然后是金属.
- 基里温度 (TC) 升高,在特定的兴奋剂水平下达到305K (CrSCl),317K (CrSBr) 和345K (CrSI).
结论:
- 孔兴奋剂是一种有效的策略,用于增强2D CrSX (X = Cl, Br, I) 铁磁体中的PMA和TC.
- 由此产生的半金属和金属性质使得这些合材料对电控自旋电子设备非常有前途.
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