An elastic lattice in a random potential

Details An elastic lattice in a random potential An elastic lattice in a random potential

1997-10-17

arxiv.org/abs/cond-mat/9710184v1

Physics

Condensed Matter

Superconductivity

7 pages, RevTex, four postscript figures

Scientific paper

10.1103/PhysRevB.57.2724

Using Monte Carlo simulations, we study the properties of an elastic triangular lattice subject to a random background potential. As the cooling rate is reduced, we observe a rather sudden crossover between two different glass phases, one with exponential decay of correlations, the other with power-law decay. Contrary to predictions derived from continuum models, no evidence of a crossover in the mean-square displacement, B(r), from quadratic growth at small r, to logarithmic growth at large r is found.

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