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通过在异构结构中滑动诱导的磁性近距离效应的调整来进行山谷操纵
Xikui Ma1, Yingcai Fan2, Weifeng Li2
1Center for Optics Research and Engineering of Shandong University, Shandong University, Qingdao, 266237, China. xianzhao@sdu.edu.cn.
Nanoscale
|November 7, 2023
概括
研究人员利用可调节的磁性近距离效应操纵了山谷在2D异构结构中的分裂. 反铁磁单层的层间滑动产生了电极化,改变了山谷分裂,为新型山谷电子设备铺平了道路.
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:
- 由磁性近距离效应驱动的自发谷极化对于先进的信息技术至关重要.
- 谷极化对接口电子属性的敏感性,包括电荷和旋转,提出了挑战和机遇.
- 现有的山谷控制方法是有限的,需要新的方法来进行强大的操纵.
研究的目的:
- 提出并研究一种利用可调节的磁性近距离效应来操纵山谷分裂的方法.
- 通过在异构结构中控制堆叠和滑动来探索电极化的产生.
- 了解层间滑动对山谷特性和新兴现象的影响.
主要方法:
- 制造一个过渡金属二甲基化物 (TMD) /反转对称反铁磁 (AFM-I) /TMD异构结构.
- 使用AFM-I单层的间层滑动调整磁性近距离效应.
- 调查由此产生的电极化 (外平面和内平面) 和分层解决的山谷分裂.
主要成果:
- 在滑动过程中,AFM-I单层增强了磁性秩序稳定性.
- 极化堆叠和层间滑动诱导了内在的电极化.
- 层间滑动可以逆转电极化,并修改分层解决的山谷分裂.
- 由于滑动,出现了异常的山谷霍尔效应和层霍尔效应.
- 谷间操纵与光学选择规则和辐射能量一致.
结论:
- 可通过层间滑动调节的磁性近距离效应为山谷控制提供了一条新的路线.
- 拟议的异构结构使得电极化和山谷分裂的强大生成和操纵成为可能.
- 调查结果表明,对包括信息处理和存储在内的先进valleytronics应用有潜力.
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