Faraday Rotation Due to Surface States in the Topological Insulator (Bi<sub>1–<i>x</i></sub>Sb<sub<i>x</i></sub>)<sub>2</sub>Te<sub>3</sub> [electronic resource].
- Washington, D.C. : United States. Dept. of Energy. Office of Nuclear Physics, 2016. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
- Physical Description:
- pages 980-984 : digital, PDF file
- Additional Creators:
- Brookhaven National Laboratory, United States. Department of Energy. Office of Nuclear Physics, and United States. Department of Energy. Office of Scientific and Technical Information
- For this research, using magneto-infrared spectroscopy, we have explored the charge dynamics of (Bi,Sb)<sub>2</sub>Te<sub>3</sub> 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.
- Published through SciTech Connect., 12/29/2016., "bnl--113961-2017-ja", "KB0301020", Nano Letters 17 2 ISSN 1530-6984 AM, and Yinming Shao; Kirk W. Post; Jhih-Sheng Wu; Siyuan Dai; Alex J. Frenzel; Anthony R. Richardella; Joon Sue Lee; Nitin Samarth; Michael M. Fogler; Alexander V. Balatsky; Dmitri E. Kharzeev; D. N. Basov.
- Funding Information:
- SC0012704, FG02-00ER45799, and FG02-88ER40388
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