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候选拓Kondo绝缘体SmB6的纳米线的自旋选择性道化

Anuva Aishwarya¹, Zhuozhen Cai¹, Arjun Raghavan¹

¹Department of Physics and Materials Research Laboratory, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA.

Science (New York, N.Y.)

|September 8, 2022

概括

研究人员使用三六化物纳米线研究相对论费米子中的自旋极化电流. 这项技术揭示了量子道和自旋动量锁定在磁性材料的洞察力.

科学领域:

凝聚物质物理学
量子力学
材料科学

背景情况:

相对论量子道显示出像克莱恩道这样的奇特现象.
拓式孔多绝缘器具有与量子现象相关的独特电子特性.

研究的目的:

调查自旋动量锁定相对论费米子的量子道特性.
为了利用三六化物纳米线探测磁性材料的旋转顺序.

主要方法:

设计了一个道几何学,使用连接到扫描道显微镜尖端的三六 (SmB6) 纳米线.
使用SmB6纳米线探测器对铁化物 (Fe1.03Te) 的旋转顺序进行成像.

主要成果:

在Fe1.03Te中观察到双线条纹旋转顺序,尼尔温度约为50K.
在10K以上,反铁磁条和顶层状况变得无法检测.
证明了旋转极化方向与道化方向之间的直接相关性.

结论:

萨马里亚姆六化物纳米线作为有效的自旋极化电流探测器.
开发的技术适用于研究自旋动量锁定相对论费米子和磁纹.

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