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Title: Spin-orbit quantum impurity in a topological magnet

Abstract

Quantum states induced by single-atomic impurities are at the frontier of physics and material science. While such states have been reported in high-temperature superconductors and dilute magnetic semiconductors, they are unexplored in topological magnets which can feature spin-orbit tunability. Here we use spin-polarized scanning tunneling microscopy/spectroscopy (STM/S) to study the engineered quantum impurity in a topological magnet Co 3Sn 2S 2. We find that each substituted In impurity introduces a striking localized bound state. Our systematic magnetization-polarized probe reveals that this bound state is spin-down polarized, in lock with a negative orbital magnetization. Moreover, the magnetic bound states of neighboring impurities interact to form quantized orbitals, exhibiting an intriguing spin-orbit splitting, analogous to the splitting of the topological fermion line. Our work collectively demonstrates the strong spin-orbit effect of the single-atomic impurity at the quantum level, suggesting that a nonmagnetic impurity can introduce spin-orbit coupled magnetic resonance in topological magnets.

Authors:
ORCiD logo [1];  [1];  [1];  [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [1];  [1]; ORCiD logo [5]; ORCiD logo [6];  [7]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [1];  [3]; ORCiD logo [3]; ORCiD logo [8] more »; ORCiD logo [7];  [4];  [9]; ORCiD logo [2]; ORCiD logo [10] « less
  1. Princeton Univ., NJ (United States)
  2. Peking Univ., Beijing (China)
  3. Sun Yat-Sen Univ., Guangzhou (China)
  4. Copenhagen Univ. (Denmark)
  5. Princeton Univ., NJ (United States); Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  6. Brookhaven National Lab. (BNL), Upton, NY (United States)
  7. Renmin Univ. of China, Beijing (China)
  8. Academia Sinica, Taipei (Taiwan)
  9. Boston College, Chestnut Hill, MA (United States)
  10. Princeton Univ., NJ (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundation; National Science Foundation (NSF); National Natural Science Foundation of China (NNSFC); National Key R&D Program of China; Chinese Academy of Sciences (CAS); Renmin University of China; National Center for Theoretical Sciences; Ministry of Science and Technology of Taiwan; Independent Research Fund Denmark
OSTI Identifier:
1676391
Grant/Contract Number:  
AC02-05CH11231; FG-02-05ER46200; DMR-1507585; GBMF4547; GBMF9461; U1832214; 117740072018YFA0305601; XDB28000000; 2016YFA0300504; 2018YFE0202600; 11774423; 11822412; 18XNLG14; 19XNLG17; FG02-99ER45747; MOST-107-2628-M-110-001-MY3; MOST-109-2112-M-001-014-MY3; DFF 8021-00047B
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 11; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Yin, Jia-Xin, Shumiya, Nana, Jiang, Yuxiao, Zhou, Huibin, Macam, Gennevieve, Sura, Hano Mohammad, Zhang, Songtian S., Cheng, Zi-Jia, Guguchia, Zurab, Li, Yangmu, Wang, Qi, Litskevich, Maksim, Belopolski, Ilya, Yang, Xian P., Cochran, Tyler A., Chang, Guoqing, Zhang, Qi, Huang, Zhi-Quan, Chuang, Feng-Chuan, Lin, Hsin, Lei, Hechang, Andersen, Brian M., Wang, Ziqiang, Jia, Shuang, and Hasan, M. Zahid. Spin-orbit quantum impurity in a topological magnet. United States: N. p., 2020. Web. doi:10.1038/s41467-020-18111-6.
Yin, Jia-Xin, Shumiya, Nana, Jiang, Yuxiao, Zhou, Huibin, Macam, Gennevieve, Sura, Hano Mohammad, Zhang, Songtian S., Cheng, Zi-Jia, Guguchia, Zurab, Li, Yangmu, Wang, Qi, Litskevich, Maksim, Belopolski, Ilya, Yang, Xian P., Cochran, Tyler A., Chang, Guoqing, Zhang, Qi, Huang, Zhi-Quan, Chuang, Feng-Chuan, Lin, Hsin, Lei, Hechang, Andersen, Brian M., Wang, Ziqiang, Jia, Shuang, & Hasan, M. Zahid. Spin-orbit quantum impurity in a topological magnet. United States. https://doi.org/10.1038/s41467-020-18111-6
Yin, Jia-Xin, Shumiya, Nana, Jiang, Yuxiao, Zhou, Huibin, Macam, Gennevieve, Sura, Hano Mohammad, Zhang, Songtian S., Cheng, Zi-Jia, Guguchia, Zurab, Li, Yangmu, Wang, Qi, Litskevich, Maksim, Belopolski, Ilya, Yang, Xian P., Cochran, Tyler A., Chang, Guoqing, Zhang, Qi, Huang, Zhi-Quan, Chuang, Feng-Chuan, Lin, Hsin, Lei, Hechang, Andersen, Brian M., Wang, Ziqiang, Jia, Shuang, and Hasan, M. Zahid. Fri . "Spin-orbit quantum impurity in a topological magnet". United States. https://doi.org/10.1038/s41467-020-18111-6. https://www.osti.gov/servlets/purl/1676391.
@article{osti_1676391,
title = {Spin-orbit quantum impurity in a topological magnet},
author = {Yin, Jia-Xin and Shumiya, Nana and Jiang, Yuxiao and Zhou, Huibin and Macam, Gennevieve and Sura, Hano Mohammad and Zhang, Songtian S. and Cheng, Zi-Jia and Guguchia, Zurab and Li, Yangmu and Wang, Qi and Litskevich, Maksim and Belopolski, Ilya and Yang, Xian P. and Cochran, Tyler A. and Chang, Guoqing and Zhang, Qi and Huang, Zhi-Quan and Chuang, Feng-Chuan and Lin, Hsin and Lei, Hechang and Andersen, Brian M. and Wang, Ziqiang and Jia, Shuang and Hasan, M. Zahid},
abstractNote = {Quantum states induced by single-atomic impurities are at the frontier of physics and material science. While such states have been reported in high-temperature superconductors and dilute magnetic semiconductors, they are unexplored in topological magnets which can feature spin-orbit tunability. Here we use spin-polarized scanning tunneling microscopy/spectroscopy (STM/S) to study the engineered quantum impurity in a topological magnet Co3Sn2S2. We find that each substituted In impurity introduces a striking localized bound state. Our systematic magnetization-polarized probe reveals that this bound state is spin-down polarized, in lock with a negative orbital magnetization. Moreover, the magnetic bound states of neighboring impurities interact to form quantized orbitals, exhibiting an intriguing spin-orbit splitting, analogous to the splitting of the topological fermion line. Our work collectively demonstrates the strong spin-orbit effect of the single-atomic impurity at the quantum level, suggesting that a nonmagnetic impurity can introduce spin-orbit coupled magnetic resonance in topological magnets.},
doi = {10.1038/s41467-020-18111-6},
url = {https://www.osti.gov/biblio/1676391}, journal = {Nature Communications},
issn = {2041-1723},
number = 1,
volume = 11,
place = {United States},
year = {2020},
month = {9}
}

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