Josephson interference phenomena above Tc

Efrat Shimshoni; Paul M. Goldbart; Nigel Goldenfeld

doi:10.1103/PhysRevB.48.9865

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Josephson interference phenomena above Tc

Efrat Shimshoni, Paul M. Goldbart, Nigel Goldenfeld

DOI 10.1103/PhysRevB.48.9865 · Physical Review B

T1

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Abstract

Superconducting fluctuations induce remnants of the Josephson effect above Tc. To explore this, we consider a paraconducting cylinder, composed of two thin films connected by tunnel junctions, and threaded by magnetic flux. The electrical conductance includes a component that is an oscillatory function of the flux, having an amplitude proportional to the square of the Josephson coupling, and decaying exponentially with the circumference over a length scale ξ(T). We estimate the typical magnitude of this effect, and contrast it with related mesoscopic effects in normal-metal systems.

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