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Title: Zeeman effect of the topological surface states revealed by quantum oscillations up to 91 Tesla

In this paper, we report quantum oscillation studies on the Bi 2Te 3-xS x topological insulator single crystals in pulsed magnetic fields up to 91 T. For the x = 0.4 sample with the lowest bulk carrier density, the surface and bulk quantum oscillations can be disentangled by combined Shubnikov–de Haas and de Hass–van Alphen oscillations, as well as quantum oscillations in nanometer-thick peeled crystals. At high magnetic fields beyond the bulk quantum limit, our results suggest that the zeroth Landau level of topological surface states is shifted due to the Zeeman effect. The g factor of the topological surface states is estimated to be between 1.8 and 4.5. Lastly, these observations shed new light on the quantum transport phenomena of topological insulators in ultrahigh magnetic fields.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [2] ;  [4] ; ORCiD logo [4] ; ORCiD logo [4] ;  [6] ;  [7] ;  [7] ;  [7] ;  [8]
  1. Tsinghua University, Beijing (China); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Shanghai Jiao Tong University (China)
  3. Fudan University, Shanghai (China)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Tsinghua University, Beijing (China)
  6. Fudan University, Shanghai (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing
  7. Shanghai Jiao Tong University (China); Collaborative Innovation Center of Advanced Microstructures, Nanjing
  8. Tsinghua University, Beijing (China); Collaborative Innovation Center of Quantum Matter, Beijing (China)
Publication Date:
Report Number(s):
LA-UR-17-22707
Journal ID: ISSN 1098-0121; TRN: US1800779
Grant/Contract Number:
AC52-06NA25396; AC02-05CH11231
Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 23; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; High Magnetic Field Science; Topological insulator magneto quantum oscillations
OSTI Identifier:
1415377