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Flux-noise spectra around the Kosterlitz-Thouless transition for two-dimensional superconductors

Beom Jun Kim·Petter Minnhagen
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Abstract

The flux-noise spectra around the Kosterlitz-Thouless transition are obtained from simulations of the two-dimensional resistively shunted junction model. In particular the dependence on the distance $d$ between the pick-up coil and the sample is investigated. The typical experimental situation corresponds to the large-$d$ limit and a simple relation valid in this limit between the complex impedance and the noise spectra is clarified. Features, which distinguish between the large- and small-$d$ limit, are identified and the possibility of observing these features in experiments is discussed.

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Beom Jun Kim, Petter Minnhagen. 1999-08-31. Flux-noise spectra around the Kosterlitz-Thouless transition for two-dimensional superconductors. https://doi.org/10.1103/physrevb.60.6834

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