Observation of a Yu-Shiba-Rusinov state originating from the magnetic moment in a curved monolayer island of 1T-phase NbSe<sub>2</sub>
Observation of a Yu-Shiba-Rusinov state originating from the magnetic moment in a curved monolayer island of 1T-phase NbSe<sub>2</sub>
复制标题
1T相NbSe<sub>2</sub>弯曲单层岛中源自磁矩的Yu-Shiba-Rusinov态的观察
DOI：
10.1039/d2nr02007f
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发表时间：
2022
期刊：
影响因子：
6.7
通讯作者：
Komeda Tadahiro
中科院分区：
文献类型：
--
作者：
Mohammad Ikram Hossain;Ferdous Ara;Syed Mohammad Fakruddin Shahed;Wang Zhipeng;Komeda Tadahiro
我们报告了在解理表面上发现的 NbSe2 1T 相岛及其磁性。 400 mK 的隧道光谱显示超导能隙中存在稳定的峰值，我们将其分配给源于超导状态磁矩的 Yu-Shiba-Rusinov (YSR) 态。 YSR峰出现在1T相岛的特定位置上，而不是在周围的2H相区域上，并且表现出各向异性衰变行为。此外，我们发现YSR峰的增强与薄膜的局部曲率之间存在密切关系。我们将磁矩的起源归因于 1T 相岛的曲率，正如最近的理论研究表明，它可以通过鲁棒的自旋轨道耦合的波函数旋转来形成磁矩。
We report the finding of a 1T phase island of NbSe2 on a cleaved surface and its magnetic properties. Tunneling spectroscopy at 400 mK shows robust peaks in the superconducting gap, which we assign to the Yu-Shiba-Rusinov (YSR) state originating from the magnetic moment placed in the superconducting state. The YSR peak appears on a specific position of an island of the 1T phase, not on the surrounding 2H phase area, and shows an anisotropic decay behavior. In addition, we found a close relationship between the enhancement of the YSR peak and the local curvature of the film. We assign the origin of the magnetic moment to the curvature of the 1T phase island, which can form a magnetic moment through a rotation of the wave function by a robust spin–orbit coupling, as indicated by a recent theoretical study.