Degradation of the electric transport characteristics of the FeSe superconductor after a long-term storage

The temperature dependence of the electrical resistance of an iron-containing superconductor with a nominal composition of FeSe0.94 was studied in the range of 4.2–300 K after a long storing for 7 years. This dependence was compared with a similar dependence of a freshly manufactured sample. After l...

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Bibliographic Details
Published in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2022-09, Vol.48 (9), p.713-715
Main Authors: Khadzhay, G. Ya, Kislitsa, M. V., Vovk, R. V., Solovjov, A. L., Nazarova, E., Buchkov, K., Vovk, S. R., Feher, A.
Format: Article
Language:English
Subjects:
Electrical resistance
Phase transitions
Storage
Superconductivity
Temperature dependence
Transport properties
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Summary:The temperature dependence of the electrical resistance of an iron-containing superconductor with a nominal composition of FeSe0.94 was studied in the range of 4.2–300 K after a long storing for 7 years. This dependence was compared with a similar dependence of a freshly manufactured sample. After long-term storing, superconductivity was retained, but the temperature of the superconducting transition decreased significantly, and the structural phase transition characteristic of a freshly prepared sample is absent. The temperature dependences of the electrical resistance both for a freshly prepared sample and after a long storing are due to the scattering of electrons by phonons and defects, and can be described in terms of the Bloch–Gruneisen–Wilson model.
ISSN:1063-777X
1090-6517
DOI:10.1063/10.0013295