Localized spin-orbit polaron in magnetic Weyl semimetal Co3Sn2S2
- 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 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.
- 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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