Resistive quantum oscillations in superconducting aluminum microstructures

I. N. Zhilyaev; I. A. Sosnin; P. Tuset; K. Fossheim

doi:10.1103/PhysRevB.54.R9658

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Resistive quantum oscillations in superconducting aluminum microstructures

I. N. Zhilyaev, I. A. Sosnin, P. Tuset, K. Fossheim

DOI 10.1103/PhysRevB.54.R9658 · Physical Review B

T1

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Abstract

Anomalous, periodic oscillations in the electrical resistance versus applied magnetic field have been found in aluminum ring microstructures at temperatures in the superconducting transition region. At low fields the oscillations, occurring at intervals of the flux quantum φ=h2e, are characterized by sharp dips in resistance versus field, on a decreasing background. The quantum-interference resistance variations are explained by periodic variations in the length λQ for excess density of quasiparticles penetrating from normal-metal regions into superconducting regions of the structure. These length variations are caused by periodic variations in critical current.

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