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

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [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)

In this paper, we report quantum oscillation studies on the Bi2Te3-xSx 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.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); USDOE
Grant/Contract Number:
AC52-06NA25396; AC02-05CH11231
OSTI ID:
1415377
Alternate ID(s):
OSTI ID: 1546133
Report Number(s):
LA-UR-17-22707; TRN: US1800779
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 23; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (2)

Non-saturating quantum magnetization in Weyl semimetal TaAs journal March 2019
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