Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Reflectance of a PbSb2Te4 crystal in a wide spectral range. / Nemov, S. A.; Ulashkevich, Yu V.; Povolotskii, A. V.; Khlamov, I. I.
в: Semiconductors, Том 50, № 10, 01.10.2016, стр. 1322-1326.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Reflectance of a PbSb2Te4 crystal in a wide spectral range
AU - Nemov, S. A.
AU - Ulashkevich, Yu V.
AU - Povolotskii, A. V.
AU - Khlamov, I. I.
N1 - Publisher Copyright: © 2016, Pleiades Publishing, Ltd. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - For the anisotropic PbSb2Te4 single crystal with a high hole concentration (p ≈ 3 × 1020 cm–3) and high conductivity (σ ≈ 2500 Ω–1 cm–1), the reflectance spectrum for a cleavage plane orthogonal to the trigonal axis C3 is recorded in a wide spectral range from 50 to 50000 cm–1. It is shown that, in the long-wavelength and mid-infrared regions, the reflectance can be described with consideration for the contribution of plasma vibrations and two crystal-lattice vibrations. The quantitative characteristics of these vibrations are determined. The characteristics are in satisfactory agreement with the electrical parameters. The discrepancies between the values of the hole effective mass calculated by different methods are attributed to the complex structure of the crystal’s valence band.
AB - For the anisotropic PbSb2Te4 single crystal with a high hole concentration (p ≈ 3 × 1020 cm–3) and high conductivity (σ ≈ 2500 Ω–1 cm–1), the reflectance spectrum for a cleavage plane orthogonal to the trigonal axis C3 is recorded in a wide spectral range from 50 to 50000 cm–1. It is shown that, in the long-wavelength and mid-infrared regions, the reflectance can be described with consideration for the contribution of plasma vibrations and two crystal-lattice vibrations. The quantitative characteristics of these vibrations are determined. The characteristics are in satisfactory agreement with the electrical parameters. The discrepancies between the values of the hole effective mass calculated by different methods are attributed to the complex structure of the crystal’s valence band.
UR - http://www.scopus.com/inward/record.url?scp=84990913381&partnerID=8YFLogxK
U2 - 10.1134/S1063782616100183
DO - 10.1134/S1063782616100183
M3 - Article
VL - 50
SP - 1322
EP - 1326
JO - Semiconductors
JF - Semiconductors
SN - 1063-7826
IS - 10
ER -
ID: 7601900