Nonlocal electrodynamics of long ultra-narrow Josephson junctions: Experiment and theory

Simple item page
dc.creatorAbdumalikov Jr, A. A.
dc.creatorKurin, V. V.
dc.creatorHelm, C.
dc.creatorDe Col, A.
dc.creatorKoval, Y.
dc.creatorUstinov, A. V.
dc.date2004-11-23
dc.date.accessioned2026-07-07T03:02:17Z
dc.date.available2026-07-07T03:02:17Z
dc.descriptionWe experimentally and theoretically investigate electromagnetic cavity modes in ultra-narrow Al-AlO$_x$-Al and Nb-AlO$_x$-Nb long Josephson junctions. Experiments show that the voltage spacing between the Fiske steps on the current-voltage characteristics of sub-$μ$m wide and several hundred $μ$m long Al-AlO$_x$-Al and Nb-AlO$_x$-Nb Josephson junctions increases when decreasing the width of a junction. This effect is explained by stray magnetic fields, which become important for narrow junctions. Theoretical estimates of the Fiske step voltage based on a nonlocal wave propagation equation are in good agreement with our experimental data. Using the nonlocal model, we determine the size and mass of a Josephson vortex by means of a variational approach, and relate vortex size to the experimentally measured critical magnetic field of the junction.
dc.descriptionSubmitted to Phys. Rev. B
dc.identifierhttps://arxiv.org/abs/cond-mat/0411573
dc.identifierhttp://arxiv.org/abs/cond-mat/0411573
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25341
dc.subjectSuperconductivity
dc.titleNonlocal electrodynamics of long ultra-narrow Josephson junctions: Experiment and theory
dc.typetext

Files

Collections

arXiv