A relation is presented which relates the flux noise spectrum and vortex dissipation for two-dimensional superconductors. The explicit forms of the noise spectrum and vortex dissipation are obtained from simulations of a two-dimensional XY-type model with time-dependent Ginzburg-Landau dynamics. The results are discussed in terms of a phenomenological description and good agreement is found. Consequences for, and comparisons with, experimental data are discussed.
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Houlrik et al. (1994) studied this question.
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