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一个通用的设计原则,用于可切换的第二阶非线性霍尔效应的控制
Xiaoliang Xiao1, Xingyu Yue2, Jinyang Ni3
1School of Physics, South China Normal University, Guangzhou, Guangzhou, 510631, CHINA.
Reports on progress in physics. Physical Society (Great Britain)
|January 16, 2026
概括
研究人员开发了一种使用电门场控制非线性霍尔效应 (NLHE) 的新方法. 这种非挥发性方法使得在没有磁性的双层材料中可切换的非线性霍尔电流成为可能.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 材料科学是一种材料科学.
- 量子力学就是量子力学.
背景情况:
- 控制非线性霍尔效应 (NLHE) 非挥发性对于设备应用至关重要.
- 对于NLHE来说,有效的门禁控制仍然是一个重大挑战.
研究的目的:
- 为双层系统中NLHE的门场控制提出一个通用设计原则.
- 用电门场来演示可切换的第二阶段NLHE.
主要方法:
- 第一个原则计算计算.
- 对称分析对称性分析
- 研究二层SnSe和SnTe的研究
主要成果:
- 一个隐藏的极化激活一个层锁的贝里曲率双极 (BCD) 在门场下,诱导一个巨大的非线性霍尔电流.
- 门场反转会切换首选的伪旋转方向,从而实现可切换的第二阶段NLHE.
- 该机制是独立于内在磁性.
结论:
- 展示了可切换的二级NLHE的通用设计原则.
- 这种方法为非线性大厅运输提供二进制开/关开关.
- 这些发现可以扩展到其他门场可控制的非线性传输和光学现象.
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