Nucleation of superconductivity in thin type-I foils

P. Valko; M. R. Gomes; T. A. Girard

doi:10.1103/PhysRevB.75.140504

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Nucleation of superconductivity in thin type-I foils

P. Valko, M. R. Gomes, T. A. Girard

DOI 10.1103/PhysRevB.75.140504 · Physical Review B

T1

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Abstract

The expulsion of flux in five type-I materials in a slow, continuously decreasing, perpendicular magnetic field provides evidence for the possible existence of a barrier in the superconductive transition. The variation of the observed critical fields with temperature yields Ginzburg-Landau parameter determinations for the materials which suggests their behavior to be more strongly type I than generally considered.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Sn Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	3.72	Pressure not reported	unknown
Re Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	1.7	Pressure not reported	unknown
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	7.2	Pressure not reported	unknown
In Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	3.41	Pressure not reported	unknown