Email this article Reflectance spectra of p-Bi2Te3:Sn crystals in a wide IR region
- Authors: Nemov S.A.1,2, Ulashkevich Y.V.3, Allahkhah A.A.1
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Affiliations:
- St Petersburg Polytechnic University
- St. Petersburg Electrotechnical University “LETI”
- Ioffe Institute
- Issue: Vol 51, No 10 (2017)
- Pages: 1295-1299
- Section: Spectroscopy, Interaction with Radiation
- URL: https://journals.rcsi.science/1063-7826/article/view/201318
- DOI: https://doi.org/10.1134/S1063782617100165
- ID: 201318
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Abstract
The reflectance spectra of a p-Bi2Te3:Sn crystal are recorded in the range 50–7900 cm–1. The spectra possess features characteristic of charge-carrier plasma oscillations and a contribution of phonons. It is shown that the dielectric function that is used in the context of Drude–Lorentz theory and includes the contributions of hole plasma oscillations and two phonons adequately describes the experimental data obtained at room temperature and at a temperature of T = 78 K.
About the authors
S. A. Nemov
St Petersburg Polytechnic University; St. Petersburg Electrotechnical University “LETI”
Author for correspondence.
Email: nemov_s@mail.ru
Russian Federation, St Petersburg, 195251; St. Petersburg, 197376
Yu. V. Ulashkevich
Ioffe Institute
Email: nemov_s@mail.ru
Russian Federation, St. Petersburg, 194021
A. A. Allahkhah
St Petersburg Polytechnic University
Email: nemov_s@mail.ru
Russian Federation, St Petersburg, 195251
