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Pisma v Zhurnal Tekhnicheskoi Fiziki, 2016 Volume 42, Issue 3, Pages 76–83 (Mi pjtf6521)

This article is cited in 2 papers

Electric field induced by collective vortex creep in superconductors with fractal clusters of normal phase

Ya. I. Kuzminab, I. V. Pleshakovab

a Ioffe Institute, St. Petersburg
b Peter the Great St. Petersburg Polytechnic University

Abstract: The influence of the collective creep of magnetic flux on the electric field induced in a superconducting composite with fractal cluster structure is considered. Current–voltage (I–V) characteristics of these superconductors are determined with allowance for the influence of the fractal dimensionality of boundaries of the normal phase clusters and the height of pinning barriers on the nonlinearity of I–V characteristics at small transport currents. A relationship is established between the collective pinning and vortex glass state that is formed in superconductors with a fractal cluster structure. It is shown that the intensity of an electric field induced in the case of collective creep is smaller than that for Anderson–Kim creep.

Keywords: Vortex, Magnetic Flux, Lorentz Forceá Critical Current, Transport Current.

Received: 07.07.2015


 English version:
Technical Physics Letters, 2016, 42:2, 149–152

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© Steklov Math. Inst. of RAS, 2024