Critical properties of Bose-glass superconductors

Details Critical properties of Bose-glass superconductors Critical properties of Bose-glass superconductors

1998-12-21

arxiv.org/abs/cond-mat/9812342v2

Europhys. Lett. 47, 494 (1999)

Physics

Condensed Matter

Superconductivity

7 pages EuroTeX, 4 eps figures. Published version

Scientific paper

10.1209/epl/i1999-00415-5

We study vortex lines in high-temperature superconductors with columnar defects produced by heavy ion irradiation. We reconsider scaling theory for the Bose glass transition with tilted magnetic fields, and propose, e.g., a new scaling form for the shape of the Bose glass phase boundary, which is relevant for experiments. We also consider Monte Carlo simulations for a vortex model with a screened interaction. Critical exponents are determined from scaling analysis of Monte Carlo data for current-voltage characteristics and other quantities. The dynamic critical exponent is found to be z = 4.6 +/- 0.3.

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