| Autor: |
Xing, Yuqing, Shen, Jianlei, Chen, Hui, Huang, Li, Gao, Yuxiang, Zheng, Qi, Zhang, Yu-Yang, Li, Geng, Hu, Bin, Qian, Guojian, Cao, Lu, Zhang, Xianli, Fan, Peng, Ma, Ruisong, Wang, Qi, Yin, Qiangwei, Lei, Hechang, Ji, Wei, Du, Shixuan, Yang, Haitao |
| Předmět: |
|
| Zdroj: |
Nature Communications; 11/5/2020, Vol. 11 Issue 1, pN.PAG-N.PAG, 1p |
| Abstrakt: |
The kagome lattice Co3Sn2S2 exhibits the quintessential topological phenomena of a magnetic Weyl semimetal such as the chiral anomaly and Fermi-arc surface states. Probing its magnetic properties is crucial for understanding this correlated topological state. Here, using spin-polarized scanning tunneling microscopy/spectroscopy (STM/S) and non-contact atomic force microscopy (nc-AFM) combined with first-principle calculations, we report the discovery of localized spin-orbit polarons (SOPs) with three-fold rotation symmetry nucleated around single S-vacancies in Co3Sn2S2. The SOPs carry a magnetic moment and a large diamagnetic orbital magnetization of a possible topological origin associated relating to the diamagnetic circulating current around the S-vacancy. Appreciable magneto-elastic coupling of the SOP is detected by nc-AFM and STM. Our findings suggest that the SOPs can enhance magnetism and more robust time-reversal-symmetry-breaking topological phenomena. Controlled engineering of the SOPs may pave the way toward practical applications in functional quantum devices. Kagome lattice material Co3Sn2S2 is identified as a magnetic Weyl semimetal and its magnetic properties are less studied. Here, the authors observe localized spin-orbit polarons nucleated around single S-vacancies carrying a large diamagnetic orbital magnetism in Co3Sn2S2. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
