Simulation Studies on the Stability of the Vortex-Glass Order

Details Simulation Studies on the Stability of the Vortex-Glass Order Simulation Studies on the Stability of the Vortex-Glass Order

1999-07-23

arxiv.org/abs/cond-mat/9907355v2

Physics

Condensed Matter

Superconductivity

Minor modifications made, a few referenced added; to appear in J. Phys. Soc. Jpn. Vol.69 No.1 (2000)

Scientific paper

10.1143/JPSJ.69.29

The stability of the three-dimensional vortex-glass order in random type-II superconductors with point disorder is investigated by equilibrium Monte Carlo simulations based on a lattice XY model with a uniform field threading the system. It is found that the vortex-glass order, which stably exists in the absence of screening, is destroyed by the screenng effect, corroborating the previous finding based on the spatially isotropic gauge-glass model. Estimated critical exponents, however, deviate considerably from the values reported for the gauge-glass model.

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