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Localized spin-orbit polaron in magnetic Weyl semimetal Co3Sn2S2

Journal Article · · Nature Communications
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  1. 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; OSTI
  2. 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
  3. 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
  4. 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
  5. Renmin Univ. of China, Beijing (China). Dept. of Physics. Beijing Key Lab. of Optoelectronic Functional Materials & Micro-Nano Devices
  6. 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)
  7. 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)
  8. 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
  9. Boston College, Chestnut Hill, MA (United States). Dept. of Physics
+ Show Author Affiliations
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:
Chinese Academy of Sciences (CAS); National Key Research and Development Projects of China; National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-99ER45747
OSTI ID:
1816478
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 11; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
magnetic properties and materials
topological insulators