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Title: Magnetic-field-induced nontrivial electronic state in the Kondo-lattice semimetal CeSb

Abstract

Synergic effect of electronic correlation and spin-orbit coupling is an emerging topic in topological materials. Central to this rapidly developing area are the prototypes of strongly correlated heavy-fermion systems. Recently, some Ce-based compounds are proposed to host intriguing topological nature, among which the electronic properties of CeSb are still under debate. Herein, we report a comprehensive study combining magnetic and electronic transport measurements, and electronic band-structure calculations of this compound to identify its topological nature. Quantum oscillations are clearly observed in both magnetization and magnetoresistance at high fields, from which one pocket with a nontrivial Berry phase is recognized. Angular-dependent magnetoresistance shows that this pocket is elongated in nature and corresponds to the electron pocket as observed in LaBi. Nontrivial electronic structure of CeSb is further confirmed by first-principle calculations, which arises from spin splitting in the fully polarized ferromagnetic state. These features indicate that magnetic field can induce nontrivial topological electronic states in this prototypical Kondo semimetal.

Authors:
 [1]; ORCiD logo [2];  [3];  [1];  [4]; ORCiD logo [4]; ORCiD logo [3];  [1];  [1];  [1];  [1];  [5];  [6]
  1. Changshu Inst. of Technology (China)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Michigan State Univ., East Lansing, MI (United States)
  4. Fujian Normal Univ. (China)
  5. Univ. of Wollongong, NSW (Australia)
  6. Hebei Univ. of Technology, Tianjing (China)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1615181
Alternate Identifier(s):
OSTI ID: 1605506
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 9; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; Electronic structure; Magnetism; Semimetals; Kondo lattice model

Citation Formats

Fang, Y, Tian, Wei, Ke, Xianglin, Tang, F., Yuan, Y. R., Zhang, J. M., Zhang, H. D., Gu, H, Han, Z. D., Qian, B., Jiang, X. F., Zhao, W. Y., and Zhang, X. M. Magnetic-field-induced nontrivial electronic state in the Kondo-lattice semimetal CeSb. United States: N. p., 2020. Web. doi:10.1103/PhysRevB.101.094424.
Fang, Y, Tian, Wei, Ke, Xianglin, Tang, F., Yuan, Y. R., Zhang, J. M., Zhang, H. D., Gu, H, Han, Z. D., Qian, B., Jiang, X. F., Zhao, W. Y., & Zhang, X. M. Magnetic-field-induced nontrivial electronic state in the Kondo-lattice semimetal CeSb. United States. doi:https://doi.org/10.1103/PhysRevB.101.094424
Fang, Y, Tian, Wei, Ke, Xianglin, Tang, F., Yuan, Y. R., Zhang, J. M., Zhang, H. D., Gu, H, Han, Z. D., Qian, B., Jiang, X. F., Zhao, W. Y., and Zhang, X. M. Thu . "Magnetic-field-induced nontrivial electronic state in the Kondo-lattice semimetal CeSb". United States. doi:https://doi.org/10.1103/PhysRevB.101.094424. https://www.osti.gov/servlets/purl/1615181.
@article{osti_1615181,
title = {Magnetic-field-induced nontrivial electronic state in the Kondo-lattice semimetal CeSb},
author = {Fang, Y and Tian, Wei and Ke, Xianglin and Tang, F. and Yuan, Y. R. and Zhang, J. M. and Zhang, H. D. and Gu, H and Han, Z. D. and Qian, B. and Jiang, X. F. and Zhao, W. Y. and Zhang, X. M.},
abstractNote = {Synergic effect of electronic correlation and spin-orbit coupling is an emerging topic in topological materials. Central to this rapidly developing area are the prototypes of strongly correlated heavy-fermion systems. Recently, some Ce-based compounds are proposed to host intriguing topological nature, among which the electronic properties of CeSb are still under debate. Herein, we report a comprehensive study combining magnetic and electronic transport measurements, and electronic band-structure calculations of this compound to identify its topological nature. Quantum oscillations are clearly observed in both magnetization and magnetoresistance at high fields, from which one pocket with a nontrivial Berry phase is recognized. Angular-dependent magnetoresistance shows that this pocket is elongated in nature and corresponds to the electron pocket as observed in LaBi. Nontrivial electronic structure of CeSb is further confirmed by first-principle calculations, which arises from spin splitting in the fully polarized ferromagnetic state. These features indicate that magnetic field can induce nontrivial topological electronic states in this prototypical Kondo semimetal.},
doi = {10.1103/PhysRevB.101.094424},
journal = {Physical Review B},
number = 9,
volume = 101,
place = {United States},
year = {2020},
month = {3}
}

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