The effect of superconducting fluctuations on the ac conductivity of a 2D electron system in the diffusive regime

Abstract

We report a complete analytical expression for the one-loop correction to the ac conductivity $\sigma (\omega )$ of a disordered two-dimensional electron system in the diffusive regime. The obtained expression includes the weak localization and Altshuler-Aronov corrections as well as the corrections due to superconducting fluctuations above superconducting transition temperature. The derived expression has no $1/(i\omega )$ divergency in the static limit, $\omega \to 0$, in agreement with general expectations for the normal state conductivity of a disordered electron system.

29 pages, 5 figures

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Cited by in corpus (2)

• Quantum Fluctuations and Multifractally-Enhanced Superconductivity in Disordered Thin Films
• Fluctuation-driven excess noise near superconducting phase transition