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Metastable states of a driven flux lattice in a superconductor with strong pins

L. Fruchter
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Abstract

The flux lattice driven by a uniform driving force in a superconductor with hot, strong, sharp and randomly distributed pinning centers, with applied magnetic field half the matching field is simulated. At low temperature both a non activated regime, where flux motion occurs within a robust percolative flux flow channel, and an activated regime are obtained depending on the sample preparation. These two regimes exhibit distinct resistivity and magnetic induction. In the non activated regime, a clear fingerprint is observed in the autocorrelation function of the longitudinal resitivity, which oscillates at a frequency close to the inverse lattice diffusion time.

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L. Fruchter. 2001-03-01. Metastable states of a driven flux lattice in a superconductor with strong pins. https://doi.org/10.1016/s0921-4534(01)00942-x

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