Localized spin-orbit polaron in magnetic Weyl semimetal Co3Sn2S2

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; Wang, Wenhong; Shen, Chengmin; Lin, Xiao; Liu, Enke; Shen, Baogen; Wang, Ziqiang; Gao, Hong-Jun

doi:10.1038/s41467-020-19440-2

Title: Localized spin-orbit polaron in magnetic Weyl semimetal Co₃Sn₂S₂

Journal Article · Thu Nov 05 00:00:00 EST 2020 · Nature Communications

DOI:https://doi.org/10.1038/s41467-020-19440-2· OSTI ID:1816478

^[1]; Shen, Jianlei ^[2];

^[3]; Huang, Li ^[3]; Gao, Yuxiang ^[3]; Zheng, Qi ^[3];

^[4];

^[3]; Hu, Bin ^[3]; Qian, Guojian ^[3];

^[3]; Zhang, Xianli ^[3]; Fan, Peng ^[3]; Ma, Ruisong ^[3]; Wang, Qi ^[5]; Yin, Qiangwei ^[5];

^[5];

^[5]; Du, Shixuan ^[6]; Yang, Haitao ^[3] more »

Chinese Academy of Sciences, Beijing (China). Beijing National Center for Condensed Matter Physics. Inst. of Physics; University of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; University of Chinese Academy of Sciences, Beijing (China). CAS Center for Excellence in Topological Quantum Computation
Chinese Academy of Sciences, Beijing (China). Beijing National Center for Condensed Matter Physics. Inst. of Physics; University of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences
Chinese Academy of Sciences, Beijing (China). Beijing National Center for Condensed Matter Physics. Inst. of Physics; University of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; University of Chinese Academy of Sciences, Beijing (China). CAS Center for Excellence in Topological Quantum Computation
University of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; University of Chinese Academy of Sciences, Beijing (China). CAS Center for Excellence in Topological Quantum Computation
Renmin Univ. of China, Beijing (China). Dept. of Physics. Beijing Key Lab. of Optoelectronic Functional Materials & Micro-Nano Devices
Chinese Academy of Sciences, Beijing (China). Beijing National Center for Condensed Matter Physics. Inst. of Physics; University of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; University of Chinese Academy of Sciences, Beijing (China). CAS Center for Excellence in Topological Quantum Computation; Songshan Lake Materials Lab., Dongguan, Guangdong (China)
Chinese Academy of Sciences, Beijing (China). Beijing National Center for Condensed Matter Physics. Inst. of Physics; University of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; Songshan Lake Materials Lab., Dongguan, Guangdong (China)
Chinese Academy of Sciences, Beijing (China). Beijing National Center for Condensed Matter Physics. Inst. of Physics; University of Chinese Academy of Sciences, Beijing (China). School of Physical Sciences; Chinese Academy of Sciences, Jiangxi (China). Inst. of Rare Earths
Boston College, Chestnut Hill, MA (United States). Dept. of Physics

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 Co₃Sn₂S_2. 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.

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Research Organization:: Boston College, Chestnut Hill, MA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Natural Science Foundation of China (NSFC); National Key Research and Development Projects of China; Chinese Academy of Sciences (CAS)

Grant/Contract Number:: FG02-99ER45747; 61888102; 11974422; 11974394; 2016YFA0202300; 2017YFA0206303; 2018YFA0305800; 2019YFA0308500; 2019YFA0704900; XDB28000000; 112111KYSB20160061

OSTI ID:: 1816478

Journal Information:: Nature Communications, Vol. 11, Issue 1; ISSN 2041-1723

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Title: Localized spin-orbit polaron in magnetic Weyl semimetal Co3Sn2S2

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Title: Localized spin-orbit polaron in magnetic Weyl semimetal Co₃Sn₂S₂