The valence zone structure in PbSb2Te4 and anisotropy of hole relaxation time
DOI:
https://doi.org/10.33910/2687-153X-2021-2-4-165-171Keywords:
crystal PbSb2Te4, semiconductor, transport properties, temperature, band structure, Fermi surface, IR-reflection, X-ray investigationsAbstract
The article analyses the existing set of data on the temperature dependences of the main kinetic coefficients and the IR-reflection spectra R(ν) of the PbSb2Te4 crystals. The form of the Fermi surface is discussed. The anisotropy of holes’ effective mass and relaxation time is estimated. The complex structure of the valence zone is confirmed, the values of these parameters are refined.
Complex X-ray studies of the structure and composition of PbSb2Te4 samples gave the possibilities to clarify the real crystal structure and explain the number of features in the IR-reflection spectra.
References
Goltsman, B. M., Kudinov, V. A., Smirnov, I. A. (1972) Poluprovodnikovye termoelektricheskie materialy na osnove Bi2Te3 [Semiconductor thermoelectric materials based on Bi2Te3]. Moscow: Nauka Publ., 320 p. (In Russian)
Nemov, S. A., Blagikh, N. M., Dzhafarov, M. B. (2014) Effect of interband scattering on transport phenomena in p-PbSb2Te4. Semiconductors, 48 (8), 999−1005. https://doi.org/10.1134/S1063782614080193 (In English)
Nemov, S. A., Blagikh, N. M., Shelimova, L. E. (2013) Features of the energy spectrum and hole-scattering mechanisms in PbSb2Te4. Semiconductors, 47 (1), 16−21. https://doi.org/10.1134/S106378261301017X (In English)
Nemov, S. A., Ulashkevich, Yu. V., Pogumirsky, M. V., Stepanova, O. S. (2020) Reflection from the Side Face of a PbSb2Te4 Crystal. Semiconductors, 54 (3), 282−284. https://doi.org/10.1134/S1063782620030161 (In English)
Nemov, S. A., Ulashkevich, Yu. V., Povolotskii, A. V., Khlamov, I. I. (2016) Reflectance of a PbSb2Te4 crystal in a wide spectral range. Semiconductors, 50 (10), 1322−1326. https://doi.org/10.1134/S1063782616100183 (In English)
Shelimova, L. E., Karpinskii, O. G., Svechnikova, T. E. et al. (2004) Synthesis and structure of layered compounds in the PbTe−Bi2Te3 and PbTe−Sb2Te3 systems. Inorganic Materials, 40 (12), 1264−1270. https://doi.org/10.1007/s10789-005-0007-2 (In English)
Shelimova, L. E., Svechnikova, T. E., Konstantinov, P. P. et al. (2007) Anisotropic thermoelectric properties of the layered compounds PbSb2Te4 and PbBi4Te7. Inorganic Materials, 43 (2), 125−131. https://doi.org/10.1134/S0020168507020057 (In English)
Zhitinskaya, M. K., Nemov, S. A., Shelimova, L. E. et al. (2008) Thermopower anisotropy in the layered compound PbSb2Te4. Physics of the Solid State, 50 (1), 6−8. https://doi.org/10.1134/S1063783408010022 (In English)
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Copyright (c) 2021 Sergey A. Nemov, Valentina D. Andreeva, Vitaliy Volkhin, Viktoriya Yu. Proklova, Yuri V. Ulashkevich
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