Fluctuation conductivity in disordered superconducting films

Abstract

We study the effect of superconducting fluctuations on the longitudinal and the transverse (Hall) conductivity in homogeneously disordered films. Our calculation is based on the Usadel equation in the real-time formulation. We adjust this approach to derive analytic expressions for the fluctuation corrections in the entire metallic part of the temperature-magnetic field phase diagram, including the effects of both classical and quantum fluctuations. This method allows us to obtain fluctuation corrections in a compact and effective way, establishing a direct connection between phenomenological and microscopic calculations.

References in corpus (4)

• Fluctuation Superconductivity in Mesoscopic Aluminum Rings
• Microscopic analysis of the superconducting quantum critical point: Finite temperature crossovers in transport near a pair-breaking quantum phase transition
• Fluctuation conductivity of thin films and nanowires near a parallel-field-tuned superconducting quantum phase transition
• Keldysh Ginzburg-Landau action of fluctuating superconductors

Cited by in corpus (9)

• Surface superconductivity as the primary cause of broadening of superconducting transition in Nb-films
• Superconducting fluctuations in a thin NbN film probed by the Hall effect
• Low anisotropy of the upper critical field in a strongly anisotropic layered cuprate: Evidence for paramagnetically limited superconductivity
• Fluctuations in two-band superconductors in a strong magnetic field
• Quantum criticality and multiple crossing points in the magnetoresistance of thin TiN-films
• The effect of superconducting fluctuations on the ac conductivity of a 2D electron system in the diffusive regime
• Transport anomalies in multiband superconductors near quantum critical point
• Fluctuation-driven excess noise near superconducting phase transition
• Microwave Signature of the Emerging Abrikosov Lattice Above $H_{c2}$