Low Temperature Physics: 24, 339 (1998); https://doi.org/10.1063/1.593596 (6 pages)
Fizika Nizkikh Temperatur: Volume 24, Number 5 (May 1998), p. 449-456    ( to contents , go back )

The critical current of granular superconductor

V. K. Ignatjev

Volglgrad State University, 2-nd Prodol`naya str.,30, Volgograd 400062, Russia
E-mail: ivanov@physic.vgu.tsaritsyn.su
pos Анотація:

(Received September 30, 1997, revised November 20, 1997)

Abstract

A mechanism of hypervortex pinning in granular superconductors is proposed to describe the field dependence of the critical current density and pinning potential. The results are in a good agreement with the experiment. The model represents the peak effect and the percolation mechanism of conductivity in ceramic superconductors.

PACS:
74.60.Ec -
74.60.Jg -

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