Processes in the electronic system of solid solutions of bismuth and antimony telluride in the range of observation of the anomalous temperature dependence of the Hall coefficient
- 作者: Stepanov N.P.1,2, Ivanov M.S.3
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隶属关系:
- Transbaikal State University
- Baikal State University
- Irkutsk State Transport University
- 期: 卷 88, 编号 9 (2024)
- 页面: 1386–1391
- 栏目: Condensed Matter Physics
- URL: https://rjsvd.com/0367-6765/article/view/681823
- DOI: https://doi.org/10.31857/S0367676524090086
- EDN: https://elibrary.ru/OEAREX
- ID: 681823
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The temperature dependences of electrical conductivity and Hall coefficient in single crystals of bismuth and antimony telluride have been studied. In samples with a high content of antimony telluride, a decrease in Hall mobility in the region of nitrogen temperatures was found, which indicates the presence of an additional mechanism for charge carrier scattering.
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作者简介
N. Stepanov
Transbaikal State University; Baikal State University
编辑信件的主要联系方式.
Email: np-stepanov@mail.ru
俄罗斯联邦, Chita; Irkutsk
M. Ivanov
Irkutsk State Transport University
Email: np-stepanov@mail.ru
Transbaikal Institute of Railway Transport
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Fig. 1. Temperature dependences of the specific electrical conductivity of crystals: 1 – Bi2Te3; 2 – Bi1.5Sb0.5Te3; 3 – Bi1.2Sb0.8Te3; 4 – Bi0.8Sb1.2Te3; 5 – Bi0.4Sb1.6Te3; 6 – Bi0.01Sb1.99Te3.
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Fig. 2. Temperature dependences of the Hall coefficient of crystals: 1 – Bi2Te3; 2 – Bi1.5Sb0.5Te3; 3 – Bi1.2Sb0.8Te3; 4 – Bi0.8Sb1.2Te3; 5 – Bi0.4Sb1.6Te3; 6 – Bi0.01Sb1.99Te3; 7 – Bi1.8Sb0.2Te3.
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Fig. 3. Temperature dependences of the Hall mobility of crystals: 1 – Bi2Te3; 2 – Bi1.5Sb0.5Te3; 3 – Bi1.2Sb0.8Te3; 4 – Bi0.8Sb1.2Te3; 5 – Bi0.4Sb1.6Te3; 6 – Bi0.01Sb1.99Te3.
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Fig. 4. Temperature dependence of the Hall mobility taking into account scattering on acoustic phonons for the Bi2Te3 crystal (a) and the Bi0.6Sb1.4Te3 crystal (b): curve 1 – theoretical calculation τ ~ T–1; curve 2 – experimental dependence.
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