Open AccessТемпературные зависимости критических параметров неоднородных сверхпроводящих пленок
Author(s) -
П.И. Безотосный,
К.А. Дмитриева
Publication year - 2021
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2021.08.51150.076
Subject(s) - condensed matter physics , critical field , homogeneous , magnetic field , critical current , superconductivity , materials science , field (mathematics) , current density , current (fluid) , physics , thermodynamics , mathematics , quantum mechanics , pure mathematics
The results of calculating the temperature dependences of the critical current density and critical magnetic field of thin inhomogeneous superconducting films are presented. Comparison of the results obtained for inhomogeneous films with the results of calculations for homogeneous ones showed that in both cases, the decrease in the critical magnetic field occurs according to the root law, and the critical current density changes according to a power law with a degree of 3/2 when approaching the critical temperature. Quantitatively, the critical current density for inhomogeneous films in the absence of an external magnetic field is lower than for homogeneous ones. In turn, the critical magnetic field of inhomogeneous films is much larger than the critical field of homogeneous films.