在不对称的二维MoSiAs2SeSe中,由电场调节的Spin Hall效应
Jinhui Xing1,2, Chao Wu1,2, Shiqi Li1,2
1School of Physics and Electronic Engineering, Jiangsu University, Zhenjiang 212013, China. Lichuan.zhang@ujs.edu.cn.
Physical chemistry chemical physics : PCCP
|May 17, 2024
概括
研究人员发现了一种新的二维Janus材料MoSiAs2Se,它从电荷电流中产生自旋电流. 电场可以调整其属性,从而使其在自旋电子设备中的应用成为可能.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学 材料科学 材料科学
- 这就是Spintronics.
背景情况:
- 在非磁性材料中的电荷电流中产生自旋电流是节能自旋电子设备的关键.
- 与Rashba和山谷效应共存的不对称2D材料由于旋转动量锁定而表现出旋转霍尔效应 (SHE).
- 强大的旋转轨道合 (SOC) 对这些现象至关重要.
研究的目的:
- 提出一种新的二维Janus材料,MoSiAs2Se,展示拉什巴和山谷效应.
- 通过使用外部电场来研究MoSiAs2Se属性的调制.
- 探索这种材料在旋转电流生成和旋转电子应用中的潜力.
主要方法:
- 使用第一原理计算来研究MoSiAs2Se.Se的电子和自旋特性.
- 分析了外部电场对材料相变和电子结构的影响.
- 计算了自旋霍尔导电性,以评估其自旋电子潜力.
主要成果:
- MoSiAs2Se表现出共存的Rashba和山谷效应,有助于旋转霍尔效应 (SHE).
- 外部电场有效调节电子特性,诱导I-II类型和半导体-金属相位过渡.
- 旋转大厅导电性的大小和方向可以通过外平面电场进行调整.
结论:
- 单层MoSiAs2Se是一种有前途的2D材料,因为它具有可调的Rashba和山谷效应.
- 电场控制为操纵自旋电流生成和自旋电子设备功能提供了一条途径.
- 这项研究扩大了对2D Janus材料的理解,用于先进的自旋电子应用.
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