在非直线反铁磁磁体中,大厅质量和横向诺瑟旋转电流
Luke Wernert1, Bastián Pradenas2, Oleg Tchernyshyov2
1Colorado State University, Department of Physics, Fort Collins, Colorado 80523, USA.
Physical review letters
|February 6, 2025
概括
非对线反铁磁铁产生独特的旋转电流霍尔效应,与对线类型不同. 在反铁磁自旋电子学中的这一发现为控制设备中的自旋电流提供了新的方法.
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:
- 非对线反铁磁体 (AFM) 由于其独特的磁性特性,正在引起自旋电子领域的兴趣.
- 在非对线AFM中理解旋转角动量传输是具有挑战性的,因为未保存的亚晶格旋转.
研究的目的:
- 为了研究与非对线AFM中的自旋旋转对称性相关的保存Noether电流.
- 在纵向驱动力下探索非对线AFM中旋转电流组件的生成.
主要方法:
- 理论研究由自旋旋转对称得出的保存的诺瑟电流.
- 通过纵向驱动力和旋波来分析旋转电流的产生.
- 在铁磁非线性AFM异构结构中旋的数值演示.
主要成果:
- 旋转电流的通用哈尔元件是由非直线AFM的纵向驱动力产生的,与直线AFM不同.
- 一个同位素的第四级张量,称为霍尔 (反向) 质量,在非对线AFM和多晶体中表征这种现象.
- 数字模拟证实了通过双层结构中的旋转送来实现旋转电流,并提供了理想边界条件的标准.
结论:
- 非对线AFM对自旋电流表现出内在的霍尔效应,由自旋波驱动.
- "霍尔质量"为这些材料的旋转转移提供了一个新的指标.
- 这些发现突出了非对线AFM在旋转电流操纵中先进的自旋电子设备应用中的潜力.
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