Observation of a non-Ohmic Hall resistivity above the critical temperature in the high-temperature superconductor YBa${}_2$Cu${}_3$O${}_{7-\delta }$

Abstract

Investigations of the resistivity and the Hall effect as a function of electric field and temperature in the normal state and upper part of the superconducting transition of an optimally doped, very thin film of YBa${}_2$Cu${}_3$O${}_{7-\delta }$ are reported. Using a fast pulsed-current technique allowed to reduce the self-heating of the sample and to reach electric fields up to 1 kV/cm. An intrinsic non-Ohmic behavior of the Hall conductivity above the critical temperature that appears to originate from two different, partially counteracting effects is revealed. The major contribution stems from the suppression of Aslamazov-Larkin superconducting fluctuations in high electric fields.

arXiv commentTo appear in Phys. Rev. B

References in corpus (6)

• Double sign reversal of the vortex Hall effect in YBa2Cu3O7-delta thin films in the strong pinning limit of low magnetic fields
• Fluctuation conductivity in superconductors in strong electric fields
• Critical fluctuation conductivity in layered superconductors in strong electric field
• Hall effect anomaly near Tc and renormalized superconducting fluctuations in YBCO
• Non linear excess conductivity of Bi${}_2$Sr${}_2$Ca${}_{n-1}$Cu${}_n$O${}_{2n+4+x}$ (n = 1,2), thin films
• Non-Ohmic critical fluctuation Hall conductivity of layered superconductors in strong electric fields

Cited by in corpus (6)

• Electrical conductivity beyond linear response in layered superconductors under magnetic field
• Vortex jets generated by edge defects in current-carrying superconductor thin strips
• Hall conductivity dominated by fluctuations near the superconducting transition in disordered films
• Transverse vortex commensurability effect and sign change of the Hall voltage in superconducting YBa${}_2$Cu${}_3$O${}_{7-\delta }$ thin films with a nanoscale periodic pinning landscape
• Interplay of flux guiding and Hall effect in Nb films with nanogrooves
• Inhomogeneous superconductivity in organic conductors: role of disorder and magnetic field