Quantum phase transition in superconducting Au0.7In0.3 films of very low normal-state sheet resistance

Simple item page
dc.creatorRosario, M. M.
dc.creatorWang, H.
dc.creatorZadorozhny, Yu.
dc.creatorLiu, Y.
dc.date2003-07-25
dc.date.accessioned2026-07-07T02:52:36Z
dc.date.available2026-07-07T02:52:36Z
dc.descriptionWe report the observation of a quantum phase transition (QPT), tuned by a parallel magnetic field, between a superconducting and metallic state in Au0.7In0.3 films of very low normal-state sheet resistance (< 90 Ohms). These films can be modeled as a random array of superconductor-normal metal-superconductor (SNS) junctions. Electrical transport and tunneling measurements suggest that, in the metallic state, the film consists of superconducting In-rich grains not linked by Josephson coupling. Whether phase fluctuation, which is not expected to be strong in such an SNS junction system according to the phase-number uncertainty relation, or a different physical process drives the observed QPT is discussed.
dc.description4pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0307629
dc.identifierhttp://arxiv.org/abs/cond-mat/0307629
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21899
dc.subjectSuperconductivity
dc.titleQuantum phase transition in superconducting Au0.7In0.3 films of very low normal-state sheet resistance
dc.typetext

Files

Collections

arXiv