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Physics  1995 

Comment on: Dynamic and Static Properties of the Randomly Pinned Flux Array

DOI: 10.1103/PhysRevLett.74.4964

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Abstract:

We reconsider the model of the randomly pinned planar flux array (or the two-dimensional XY-model with random fields and no vortices) in extensive Monte Carlo simulations. We show that contrary to what has been reported recently [Phys.\ Rev.\ Lett.\ {\bf 72}, 4133 (1994)] the disorder-averaged displacement correlation function is different from the pure case for larger values of the disorder. Its slope as a function of the logarithm of disorder is compatible with newer RG-calculation results.

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