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Fizika i Tekhnika Poluprovodnikov, 2020 Volume 54, Issue 3, Pages 228–231 (Mi phts5257)

This article is cited in 2 papers

Electronic properties of semiconductors

Reflection from the side face of a PbSb$_{2}$Te$_{4}$ crystal

S. A. Nemovabc, Yu. V. Ulashkevichd, M. V. Pogumirskye, O. S. Stepanovab

a Peter the Great St. Petersburg Polytechnic University
b Saint Petersburg Electrotechnical University "LETI"
c Zabaikalsky State University, Chita
d Ioffe Institute, St. Petersburg
e FAREXPORT, Ltd., St. Petersburg, Russia

Abstract: The reflection spectra from the side face of a PbSb$_{2}$Te$_{4}$ crystal were measured by room temperature in polarized light in the range 50 – 4000 cm$^{-1}$. Significant anisotropy of the crystal is shown in the directions along and across the crystal layers. The revealed spectral features are interpreted by the contribution of plasma oscillations and crystal lattice vibrations. The calculated dielectric function parameters in the framework of the Drude-Lorentz model are consistent with experimental data.

Keywords: thermoelectric materials, PbSb$_{2}$Te$_{4}$ crystal, reflection spectrum, Drude–Lorentz model.

Received: 07.11.2019
Revised: 12.11.2019
Accepted: 12.11.2019

DOI: 10.21883/FTP.2020.03.49023.9308


 English version:
Semiconductors, 2020, 54:3, 282–284

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© Steklov Math. Inst. of RAS, 2024