Abstract
The Fermi surface anisotropy of (Bi1−x Sbx)2Te3 single crystals (0.25 ≤ x ≤ 1) was studied by analyzing the angular dependence of the frequency of Shubnikov-de Haas oscillations and the effect of tin and silver doping on the thermoelectric power in these crystals in the temperature range 77 ≤ T ≤ 300 K. It was shown that silver doping of (Bi1−x Sbx)2Te3 mixed crystals produces acceptors, while silver in Bi2Te3 acts as a donor. Tin also exhibits acceptor properties. Both tin and silver doping of p-(Bi1−x Sbx)2Te3 mixed crystals decrease the thermoelectric power due to an increase in the hole concentration.
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Original Russian Text © V.A. Kulbachinskiĭ, A.Yu. Kaminskiĭ, P.M. Tarasov, P. Lostak, 2006, published in Fizika Tverdogo Tela, 2006, Vol. 48, No. 5, pp. 594–601.
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Kulbachinskiĭ, V.A., Kaminskiĭ, A.Y., Tarasov, P.M. et al. Fermi surface and thermoelectric power of (Bi1−x Sbx)2Te3<Ag, Sn> mixed crystals. Phys. Solid State 48, 833–840 (2006). https://doi.org/10.1134/S1063783406050040
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DOI: https://doi.org/10.1134/S1063783406050040