在全半导体铁磁CrSBr-异构中超快激光诱导的旋转动力学
1School of Physics, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 611731, China.
The journal of physical chemistry letters
|January 13, 2025
概括
我们使用5秒激光脉冲计算研究了铁磁非磁范德瓦尔斯异构结构中的超快旋转转移. 从CRSBr到二烯的旋转注入发生在五秒钟内,可通过激光流动控制用于旋转电子应用.
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
- 量子光学是一种量子光学.
背景情况:
- 两个维的范德瓦尔斯 (vdW) 异构结构可以实现高效的界面旋转注入.
- 在全半导体铁磁vdW异构中,光诱导的旋转转移动力学的物理过程尚未得到充分理解.
研究的目的:
- 以计算方式研究由秒激光脉冲诱导的CrSBr-二烯vdW异构中的超快,电子介导的旋转转移动力学.
- 探索激光脉冲参数对旋转转移和去磁化的影响.
主要方法:
- 对旋转转移动力学的计算研究.
- 模拟使用crsbr-phosphorene vdW异构的femtosecond激光脉冲相互作用.
- 在50 femt秒以下的时间尺度上分析电子介导的旋转转移.
主要成果:
- 观察到超快的自旋注入从Cr原子到P原子在五秒钟内.
- 演示了光学诱导和界面原子介导的旋转转移效应.
- 通过不同的激光波动,显示了对去磁化和旋转转移的敏感操纵.
结论:
- 提供了对铁磁非磁vdW异构结构中自旋动态的微观理解.
- 突出了在螺旋电子应用中光学控制的旋转转移的潜力.
- 确立了crsbr-phosphorene作为超快速自旋电子学的有前途的系统.
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