Local superconducting coupling in the strong-localization limit of ultrathin granular metal films

D. B. Haviland; H. M. Jaeger; B. G. Orr; A. M. Goldman

doi:10.1103/PhysRevB.40.719

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Local superconducting coupling in the strong-localization limit of ultrathin granular metal films

D. B. Haviland, H. M. Jaeger, B. G. Orr, A. M. Goldman

DOI 10.1103/PhysRevB.40.719 · Physical Review B

T1

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Abstract

The onset of fluctuations into the superconducting state, as identified by the appearance of a local minimum in the resistance versus temperature, is found to be coincident with the characteristic activation energy of normal-state conduction falling to a value of the order of the superconducting energy gap of the material at T=0. The model of conduction used is variable-range hopping with a Coulomb gap, appropriate to granular metals.

Source-reported materials — not catalogue approval

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