Normal metal - insulator - superconductor interferometer

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dc.creatorArutyunov, K. Yu.
dc.creatorHongisto, T. T.
dc.date2003-08-05
dc.date.accessioned2026-07-07T13:00:54Z
dc.date.available2026-07-07T13:00:54Z
dc.descriptionHybrid normal metal - insulator - superconductor microstructures suitable for studying an interference of electrons were fabricated. The structures consist of a superconducting loop connected to a normal metal electrode through a tunnel barrier . An optical interferometer with a beam splitter can be considered as a classical analogue for this system. All measurements were performed at temperatures well below 1 K. The interference can be observed as periodic oscillations of the tunnel current (voltage) through the junction at fixed bias voltage (current) as a function of a perpendicular magnetic field. The magnitude of the oscillations depends on the bias point. It reaches a maximum at energy $eV$ which is close to the superconducting gap and decreases with an increase of temperature. Surprisingly, the period of the oscillations in units of magnetic flux $ΔΦ$ is equal neither to $h/e$ nor to $h/2e$, but significantly exceeds these values for larger loop circumferences. The origin of the phenomena is not clear.
dc.description11 pages and 8 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0308088
dc.identifierhttp://arxiv.org/abs/cond-mat/0308088
dc.identifierPHYSICAL REVIEW B 70, 064514 (2004)
dc.identifierdoi:10.1103/PhysRevB.70.064514
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/225986
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleNormal metal - insulator - superconductor interferometer
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