Effect of Zn on thermoelectric power in superconducting Bi2Sr2CaxZn1−xCu2O8+y compounds

For the first time, studies of the temperature dependences of the thermoelectric power for various compositions of Bi2Sr2CaxZn1−xCu2O8+y (x = 1; 0.8; 0.4) in the range 77–320 K have been carried out. The obtained experimental results are analyzed within the framework of the Xin’s two-band model. The...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2021-02, Vol.47 (2), p.106-109
Main Authors: Ragimov, S. S., Askerzade, I. N., Agaeva, G. I.
Format: Article
Language:English
Subjects:
Thermoelectricity
Zinc
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Summary:For the first time, studies of the temperature dependences of the thermoelectric power for various compositions of Bi2Sr2CaxZn1−xCu2O8+y (x = 1; 0.8; 0.4) in the range 77–320 K have been carried out. The obtained experimental results are analyzed within the framework of the Xin’s two-band model. The concentration of holes per copper atom and the band gap of the semiconductor type Bi–O layers are determined. It is shown that the replacement of the calcium element with zinc in these proportions does not lead to a change in the electronic band structure of Bi2Sr2CaCu2O8+y.
ISSN:1063-777X
1090-6517
DOI:10.1063/10.0003169