Current effect on vortex-antivortex depairing in type-II superconductors

L. Romano’; C. Paracchini

doi:10.1103/PhysRevB.62.5349

← Back to search

Current effect on vortex-antivortex depairing in type-II superconductors

L. Romano’, C. Paracchini

DOI 10.1103/PhysRevB.62.5349 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

An iterated mean-field approach is here considered to describe the contribution of the applied current to the generation of thermally excited vortices. The Lorentz term is added to the vortex-antivortex pairing potential and the obtained interaction, following the Kosterlitz-Thouless scheme, is screened by the dielectric constant. The recoursion equations are solved and an expression of the resistivity vs temperature, in the limit of low applied currents, is obtained above a current dependent critical temperature, whose expression is in good agreement with the experimental results.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Hg-Xe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.47	Pressure not reported	unknown
YBCO/PrBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	21.3	Pressure not reported	unknown
YBCO Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	20.41	Pressure not reported	unknown