相对论旋转动量锁定在替代磁体中
Carmine Autieri1,2, Amar Fakhredine3
1International Research Centre Magtop, Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, PL-02668 Warsaw, Poland.
The journal of physical chemistry letters
|December 30, 2025
概括
像YVO3和MnTe这样的替代磁体中的相对论旋转动量锁定是由旋转轨道合和反对称交换引起的,影响旋转倾斜和k空间属性. 这项研究揭示了这些材料中明显的相对论旋转动量锁定特性.
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:
- 旋转动量锁定对于旋转电子学至关重要,已经在非相对论极限中进行了研究.
- 变磁体由于其晶体结构和磁性排序,具有独特的磁性和电子性质.
- 旋转轨道合引入了反对称的交换相互作用,导致磁性材料的旋转倾斜.
研究的目的:
- 通过包括旋转轨道合来研究变磁体中的相对论旋转动量锁定.
- 分析反对称交换相互作用和旋转倾斜对旋转动量锁定的影响.
- 探索相对论旋转动量锁定在正方体YVO3和六边形MnTe中的特定特征.
主要方法:
- 在变磁系统中对旋转动量的锁定进行理论研究.
- 分析旋转轨道合对电子带结构和旋转极化的影响.
- 用不同的角度运动量组成部分 (s-,d波) 来描述旋转动量锁定的特征.
主要成果:
- 在YVO3中,相对论旋转动量锁定包括s,dxy和dxz波组件.
- 在MnTe中,主导的Sy元件保留了非相对论g波锁定,但对称性破坏将其降低到d波.
- 在MnTe中,相对论旋转动量锁定由dxz,dyz和s波组件组成.
- 倾斜自旋元件,虽然在实体空间中很小,但对k空间属性有很大的贡献.
结论:
- 旋转轨道合和反对称交换从根本上改变了变磁体中的旋转动量锁定,导致相对论效应.
- 晶体结构的对称性和尼尔向量的方向决定了相对论旋转动量锁定的具体形式.
- 变磁体中的相对论旋转动量锁定对电荷和旋转传输现象有重大影响,包括旋转霍尔导电性和旋转光电流.
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