Creep of vortices and magnetic flux percolation in high-temperature superconducting composites

Yu. I. Kuzmin

Ioffe Institute, St. Petersburg, Russia

Abstract: The effect of magnetic flux percolation on the creep resistance in superconducting composites containing normal-phase fractal clusters has been studied. An exact solution has been obtained for the voltage induced by the magnetic flux creep taking into account both forward and backward vortex hopping. It has been found that the Anderson-Kim creep resistance in a percolative superconductor exceeds the collective creep resistance at an equivalent height of the pinning barrier.

Keywords: creep, percolation, vortex, pinning, critical current.

Received: 16.01.2024
Revised: 16.01.2024
Accepted: 23.01.2024

DOI: 10.61011/PJTF.2024.10.57700.19865

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