Microscopic Model of Critical Current Noise in Josephson Junctions

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dc.creatorConstantin, Magdalena
dc.creatorYu, Clare C.
dc.date2006-12-15
dc.date2007-11-13
dc.date.accessioned2026-07-07T08:42:25Z
dc.date.available2026-07-07T08:42:25Z
dc.descriptionWe present a simple microscopic model to show how fluctuating two--level systems in the Josephson junction tunnel barrier of thickness $L$ can modify the potential energy of the barrier and produce critical current noise spectra. We find low frequency $1/f$ noise that goes as $L^5$. Our values are in good agreement with recent experimental measurements of critical current noise in Al/AlO$_{x}$/Al Josephson junctions. We also investigate the sensitivity of the noise on the nonuniformity of the tunnel barrier.
dc.description4 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0612410
dc.identifierhttp://arxiv.org/abs/cond-mat/0612410
dc.identifierPhys. Rev. Lett. 99, 207001 (2007)
dc.identifierdoi:10.1103/PhysRevLett.99.207001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141955
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleMicroscopic Model of Critical Current Noise in Josephson Junctions
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