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.

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Cited by in corpus (20)

• Superconductor-insulator transitions: Phase diagram and magnetoresistance
• The Hall Effect in Superconducting Films
• Surface superconductivity as the primary cause of broadening of superconducting transition in Nb-films
• Hall conductivity dominated by fluctuations near the superconducting transition in disordered films
• The role of Coulomb interaction in superconducting NbTiN thin films
• Superconducting fluctuations in a thin NbN film probed by the Hall effect
• Observation of the ghost critical field for superconducting fluctuations in a disordered TaN thin film
• 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
• Superconducting fluctuations at arbitrary disorder strength
• Critical Viscosity of a Fluctuating Superconductor
• Fluctuation conductivity of disordered superconductors in magnetic fields
• Pairing Fluctuation AC Conductivity of Disordered Thin Films
• Quantum criticality and multiple crossing points in the magnetoresistance of thin TiN-films
• Transport anomalies in multiband superconductors near quantum critical point
• Restoring gauge invariance in conventional fluctuation corrections to a superconductor
• The effect of superconducting fluctuations on the ac conductivity of a 2D electron system in the diffusive regime
• Fluctuation-driven excess noise near superconducting phase transition
• Microwave Signature of the Emerging Abrikosov Lattice Above $H_{c2}$
• Anisotropy and effective dimensionality crossover of the fluctuation conductivity of hybrid superconductor/ferromagnet structures