Hall conductivity dominated by fluctuations near the superconducting transition in disordered films

Abstract

We have studied the Hall effect in superconducting tantalum nitride films. We find a large contribution to the Hall conductivity near the superconducting transition, which we can track to temperatures well above $T_c$ and magnetic fields well above the upper critical field, ${\text{H}}_{c2}(0)$. This contribution arises from Aslamazov-Larkin superconducting fluctuations, and we find quantitative agreement between our data and recent theoretical analysis based on time dependent Ginzburg-Landau theory.

References in corpus (5)

• High Field Studies of Superconducting Fluctuations in High-T_c Cuprates: Evidence for a Small Gap distinct from the Large Pseudogap
• High-field Hall resistivity and magnetoresistance in electron-doped Pr_2-xCe_xCuO_{4-δ}
• The Hall Effect in Superconducting Films
• Fluctuation conductivity in disordered superconducting films
• Observation of a non-Ohmic Hall resistivity above the critical temperature in the high-temperature superconductor YBa${}_2$Cu${}_3$O${}_{7-\delta }$

Cited by in corpus (19)

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• The Hall Effect in Superconducting Films
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• Superconductor to weak-insulator transitions in disordered Tantalum Nitride films
• Fabrication of superconducting tantalum nitride thin films using infra-red pulsed laser deposition
• Observation of the ghost critical field for superconducting fluctuations in a disordered TaN thin film
• Superconducting fluctuations in a thin NbN film probed by the Hall effect
• Absence of cyclotron resonance in the anomalous metallic phase in InO${}_x$
• Control of band structure of FeSe single crystals via biaxial strain
• Photon drag of superconducting fluctuations in 2D systems
• Sign Reversal of the Hall Response in a Crystalline Superconductor
• Combined effects of pairing fluctuations and a pseudogap in the Cuprate Hall effect
• Critical Viscosity of a Fluctuating Superconductor
• Unified approach to electrical and thermal transport in high-$T_c$ superconductors
• Fluctuation conductivity of disordered superconductors in magnetic fields
• Slow electron-phonon relaxation controls the dynamics of the superconducting resistive transition
• Granular-composite-like electrical transport properties of polycrystalline cubic TaN${}_x$ thin films prepared by rf sputtering method
• Growth optimization of TaN for superconducting spintronics