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Title: Faraday Rotation Due to Surface States in the Topological Insulator (Bi1–xSbx)2Te3

Abstract

For this research, using magneto-infrared spectroscopy, we have explored the charge dynamics of (Bi,Sb)2Te3 thin films on InP substrates. From the magneto-transmission data we extracted three distinct cyclotron resonance (CR) energies that are all apparent in the broad band Faraday rotation (FR) spectra. This comprehensive FR-CR data set has allowed us to isolate the response of the bulk states from the intrinsic surface states associated with both the top and bottom surfaces of the film. Finally, the FR data uncovered that electron- and hole-type Dirac Fermions reside on opposite surfaces of our films, which paves the way for observing many exotic quantum phenomena in topological insulators.

Authors:
ORCiD logo [1];  [2];  [2];  [2];  [2];  [3];  [3];  [3];  [2];  [4];  [5];  [6]
  1. Columbia Univ., New York, NY (United States). Department of Physics
  2. University of California-San Diego, La Jolla, CA (United States). Physics Department
  3. Pennsylvania State Univ., University Park, PA (United States). Dept of Physics
  4. Nordita, KTH Royal Institute of Technology and Stockholm University, Stokholm (Sweden); Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Institute for Materials Science
  5. Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy; Brookhaven National Lab. (BNL), Upton, NY (United States). Department of Physics and RIKEN-BNL Research Cente
  6. Columbia Univ., New York, NY (United States). Department of Physics; University of California-San Diego, La Jolla, CA (United States). Physics Department
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1376104
Report Number(s):
BNL-113961-2017-JA
Journal ID: ISSN 1530-6984; KB0301020
Grant/Contract Number:  
SC0012704; FG02-00ER45799; FG02-88ER40388
Resource Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 17; Journal Issue: 2; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Bismuth antimony telluride; cyclotron resonance; Faraday rotation; topological insulators; topological surface states

Citation Formats

Shao, Yinming, Post, Kirk W., Wu, Jhih-Sheng, Dai, Siyuan, Frenzel, Alex J., Richardella, Anthony R., Lee, Joon Sue, Samarth, Nitin, Fogler, Michael M., Balatsky, Alexander V., Kharzeev, Dmitri E., and Basov, D. N. Faraday Rotation Due to Surface States in the Topological Insulator (Bi1–xSbx)2Te3. United States: N. p., 2016. Web. doi:10.1021/acs.nanolett.6b04313.
Shao, Yinming, Post, Kirk W., Wu, Jhih-Sheng, Dai, Siyuan, Frenzel, Alex J., Richardella, Anthony R., Lee, Joon Sue, Samarth, Nitin, Fogler, Michael M., Balatsky, Alexander V., Kharzeev, Dmitri E., & Basov, D. N. Faraday Rotation Due to Surface States in the Topological Insulator (Bi1–xSbx)2Te3. United States. https://doi.org/10.1021/acs.nanolett.6b04313
Shao, Yinming, Post, Kirk W., Wu, Jhih-Sheng, Dai, Siyuan, Frenzel, Alex J., Richardella, Anthony R., Lee, Joon Sue, Samarth, Nitin, Fogler, Michael M., Balatsky, Alexander V., Kharzeev, Dmitri E., and Basov, D. N. Thu . "Faraday Rotation Due to Surface States in the Topological Insulator (Bi1–xSbx)2Te3". United States. https://doi.org/10.1021/acs.nanolett.6b04313. https://www.osti.gov/servlets/purl/1376104.
@article{osti_1376104,
title = {Faraday Rotation Due to Surface States in the Topological Insulator (Bi1–xSbx)2Te3},
author = {Shao, Yinming and Post, Kirk W. and Wu, Jhih-Sheng and Dai, Siyuan and Frenzel, Alex J. and Richardella, Anthony R. and Lee, Joon Sue and Samarth, Nitin and Fogler, Michael M. and Balatsky, Alexander V. and Kharzeev, Dmitri E. and Basov, D. N.},
abstractNote = {For this research, using magneto-infrared spectroscopy, we have explored the charge dynamics of (Bi,Sb)2Te3 thin films on InP substrates. From the magneto-transmission data we extracted three distinct cyclotron resonance (CR) energies that are all apparent in the broad band Faraday rotation (FR) spectra. This comprehensive FR-CR data set has allowed us to isolate the response of the bulk states from the intrinsic surface states associated with both the top and bottom surfaces of the film. Finally, the FR data uncovered that electron- and hole-type Dirac Fermions reside on opposite surfaces of our films, which paves the way for observing many exotic quantum phenomena in topological insulators.},
doi = {10.1021/acs.nanolett.6b04313},
journal = {Nano Letters},
number = 2,
volume = 17,
place = {United States},
year = {Thu Dec 29 00:00:00 EST 2016},
month = {Thu Dec 29 00:00:00 EST 2016}
}

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Works referencing / citing this record:

Chiral Spin Mode on the Surface of a Topological Insulator
journal, September 2017


rf Quantum Capacitance of the Topological Insulator Bi 2 Se 3 in the Bulk Depleted Regime for Field-Effect Transistors
journal, February 2018


Terahertz Faraday and Kerr rotation spectroscopy of Bi 1 x Sb x films in high magnetic fields up to 30 tesla
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Interband absorption edge in the topological insulators Bi 2 ( Te 1 x Se x ) 3
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Optical signatures of Dirac nodal lines in NbAs 2
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Observation of Extrinsic Photo-Induced Inverse Spin Hall Effect in a GaAs/AlGaAs Two-Dimensional Electron Gas
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Chiral Spin Mode on the Surface of a Topological Insulator
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Observation of chiral surface excitons in a topological insulator Bi 2 Se 3
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Optical Signatures of Dirac Nodal-lines in NbAs$_2$
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