Modeling flux-flow dissipation from randomly placed strong-pinning sites and comparison with ion-irradiated cuprate superconductors

K. E. Gray; D. G. Steel; J. D. Hettinger; M. M. Eddy

doi:10.1103/PhysRevB.57.13894

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Modeling flux-flow dissipation from randomly placed strong-pinning sites and comparison with ion-irradiated cuprate superconductors

K. E. Gray, D. G. Steel, J. D. Hettinger, M. M. Eddy

DOI 10.1103/PhysRevB.57.13894 · Physical Review B

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Abstract

The interaction of an Abrikosov vortex lattice with randomly placed strong pinning centers (produced experimentally with heavy-ion irradiation) has been modeled with a particularly simple and powerful expression. Excellent quantitative fits to the dissipation in ion-irradiated Tl2Ba2CaCu2Ox are found for T/Tc=0.75–0.9 over ranges of 10 000 in resistance and 60 in field. The three free parameters are within a factor of 2 of expectations.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Tl2Ba2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	102.2	Pressure not reported	midpoint
Nb3Ge Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
NbSe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown