Critical fluctuation conductivity in layered superconductors in strong electric field

Abstract

The paraconductivity, originating from critical superconducting order-parameter fluctuations in the vicinity of the critical temperature in a layered superconductor is calculated in the frame of the self-consistent Hartree approximation, for an arbitrarily strong electric field and zero magnetic field. The paraconductivity diverges less steep towards the critical temperature in the Hartree approximation than in the Gaussian one and it shows a distinctly enhanced variation with the electric field. Our results indicate that high electric fields can be effectively used to suppress order-parameter fluctuations in high-temperature superconductors.

arXiv comment11 pages, 2 figures, to be published in Phys. Rev. B

References in corpus (5)

• On the consequences of the uncertainty principle on the superconducting fluctuations well inside the normal state
• Thermodynamics of Gaussian fluctuations and paraconductivity in layered superconductors
• Fluctuation conductivity in superconductors in strong electric fields
• Critical scaling of the a.c. conductivity for a superconductor above Tc
• Nonlinear fluctuation phenomena in the transport properties of superconductors

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