skip to main content

DOE PAGESDOE PAGES

Title: Simultaneous detection of quantum oscillations from bulk and topological surface states in metallic Bi 2Se 2.1Te 0.9

Here, Shubnikov-de Haas (SdH) oscillations in metallic Bi 2Se 2.1Te 0.9 are studied in magnetic fields up to 35 Tesla. It is demonstrated that two characteristic frequencies determine the quantum oscillations of the conductivity. Angle dependent measurements and calculations of the Berry phase show that the two frequencies F 1 and F 2 describe oscillations from surface and bulk carriers, respectively. At low magnetic fields, only SdH oscillation from topological surface states can be detected whereas at high magnetic field the bulk oscillations dominate. The origin of the separation of bulk and surface SdH oscillations into different magnetic field ranges is revealed in the difference of the cyclotron masses m c. The bulk m c is nearly three times larger than the surface cyclotron mass resulting in a stronger attenuation of the bulk oscillation amplitude upon decreasing magnetic field. This makes it possible to detect and characterize the surface SdH oscillations in the low-field range and the bulk oscillations at high magnetic fields.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5]
  1. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  2. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
  3. Bulgarian Academy of Sciences, Sofia (Bulgaria). Inst. of Optical Materials and Technology
  4. Univ. of Houston, Houston, TX (United States). Texas Center for Superconductivity (TCSUH) and Dept. of Physics
  5. Univ. of Houston, Houston, TX (United States). Texas Center for Superconductivity (TCSUH) and Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Report Number(s):
INL/JOU-17-41576
Journal ID: ISSN 1478-6435
Grant/Contract Number:
AC07-05ID14517; FA9550-15-1-0236; FNI-T-02/26; DMR-1157490; FG02-01ER45872
Type:
Accepted Manuscript
Journal Name:
Philosophical Magazine (2003, Print)
Additional Journal Information:
Journal Name: Philosophical Magazine (2003, Print); Journal Volume: 97; Journal Issue: 20; Journal ID: ISSN 1478-6435
Publisher:
Taylor & Francis
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; T.L.L. Temple Foundation; John J. and Rebecca Moores Endowment; US Air Force Office of Scientific Research (AFOSR); Bulgaria National Science Fund (BNSF); National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; High Magnetic Fields; Quantum Oscillations; topological insulator; Shubnikov-de Haas oscillations; surface states; bulk states
OSTI Identifier:
1402502

Shrestha, Keshav, Graf, David E., Marinova, Vera, Lorenz, Bernd, and Chu, Paul C. W.. Simultaneous detection of quantum oscillations from bulk and topological surface states in metallic Bi2Se2.1Te0.9. United States: N. p., Web. doi:10.1080/14786435.2017.1314563.
Shrestha, Keshav, Graf, David E., Marinova, Vera, Lorenz, Bernd, & Chu, Paul C. W.. Simultaneous detection of quantum oscillations from bulk and topological surface states in metallic Bi2Se2.1Te0.9. United States. doi:10.1080/14786435.2017.1314563.
Shrestha, Keshav, Graf, David E., Marinova, Vera, Lorenz, Bernd, and Chu, Paul C. W.. 2017. "Simultaneous detection of quantum oscillations from bulk and topological surface states in metallic Bi2Se2.1Te0.9". United States. doi:10.1080/14786435.2017.1314563. https://www.osti.gov/servlets/purl/1402502.
@article{osti_1402502,
title = {Simultaneous detection of quantum oscillations from bulk and topological surface states in metallic Bi2Se2.1Te0.9},
author = {Shrestha, Keshav and Graf, David E. and Marinova, Vera and Lorenz, Bernd and Chu, Paul C. W.},
abstractNote = {Here, Shubnikov-de Haas (SdH) oscillations in metallic Bi2Se2.1Te0.9 are studied in magnetic fields up to 35 Tesla. It is demonstrated that two characteristic frequencies determine the quantum oscillations of the conductivity. Angle dependent measurements and calculations of the Berry phase show that the two frequencies F1 and F2 describe oscillations from surface and bulk carriers, respectively. At low magnetic fields, only SdH oscillation from topological surface states can be detected whereas at high magnetic field the bulk oscillations dominate. The origin of the separation of bulk and surface SdH oscillations into different magnetic field ranges is revealed in the difference of the cyclotron masses mc. The bulk mc is nearly three times larger than the surface cyclotron mass resulting in a stronger attenuation of the bulk oscillation amplitude upon decreasing magnetic field. This makes it possible to detect and characterize the surface SdH oscillations in the low-field range and the bulk oscillations at high magnetic fields.},
doi = {10.1080/14786435.2017.1314563},
journal = {Philosophical Magazine (2003, Print)},
number = 20,
volume = 97,
place = {United States},
year = {2017},
month = {4}
}

Works referenced in this record:

Quantum oscillations in a topological insulator Bi1xSbx
journal, August 2009

Two-dimensional electron gas in δ-dopedSrTiO3
journal, August 2010

Colloquium: Topological insulators
journal, November 2010

Experimental Realization of a Three-Dimensional Topological Insulator, Bi2Te3
journal, June 2009

Observation of a large-gap topological-insulator class with a single Dirac cone on the surface
journal, May 2009
  • Xia, Y.; Qian, D.; Hsieh, D.
  • Nature Physics, Vol. 5, Issue 6, p. 398-402
  • DOI: 10.1038/nphys1274

Quantum Oscillations and Hall Anomaly of Surface States in the Topological Insulator Bi2Te3
journal, July 2010

Topological Insulator Materials
journal, October 2013
  • Ando, Yoichi
  • Journal of the Physical Society of Japan, Vol. 82, Issue 10, Article No. 102001
  • DOI: 10.7566/JPSJ.82.102001