Effect of Composition Disorder in a System of Superconducting Granules on the Superconducting Properties of La2–xSrxCuO4 Ceramic Samples


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Abstract

The effect of the degree of doping with strontium has on the superconducting properties of granular superconductor La2–xSrxCuO4 is considered. It is found that reducing the concentration of strontium under conditions of compositional disorder broadens the superconducting transition above the temperature of intergranular Josephson coupling and raises the temperature of the completion of the global superconducting transition.

About the authors

N. V. Dalakova

Verkin Institute for Low Temperature Physics and Engineering

Author for correspondence.
Email: dalakova@ilt.kharkov.ua
Ukraine, Kharkiv, 61103

E. Yu. Beliayev

Verkin Institute for Low Temperature Physics and Engineering

Email: dalakova@ilt.kharkov.ua
Ukraine, Kharkiv, 61103

Yu. A. Savina

Verkin Institute for Low Temperature Physics and Engineering

Email: dalakova@ilt.kharkov.ua
Ukraine, Kharkiv, 61103

O. I. Yuzephovich

Verkin Institute for Low Temperature Physics and Engineering; International Laboratory of High Magnetic Fields and Low Temperatures

Email: dalakova@ilt.kharkov.ua
Ukraine, Kharkiv, 61103; Wroclaw, 53-421

S. V. Bengus

Verkin Institute for Low Temperature Physics and Engineering; International Laboratory of High Magnetic Fields and Low Temperatures

Email: dalakova@ilt.kharkov.ua
Ukraine, Kharkiv, 61103; Wroclaw, 53-421

N. P. Bobrysheva

Faculty of Chemistry

Email: dalakova@ilt.kharkov.ua
Russian Federation, St. Petersburg, 198504

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