Fluctuation Superconductivity in Mesoscopic Aluminum Rings

Simple item page
dc.creatorKoshnick, Nicholas C.
dc.creatorBluhm, Hendrik
dc.creatorHuber, Martin E.
dc.creatorMoler, Kathryn A.
dc.date2009-01-02
dc.date.accessioned2026-07-07T12:24:28Z
dc.date.available2026-07-07T12:24:28Z
dc.descriptionFluctuations are important near phase transitions, where they can be difficult to describe quantitatively. Superconductivity in mesoscopic rings is particularly intriguing because the critical temperature is an oscillatory function of magnetic field. There is an exact theory for thermal fluctuations in one-dimensional superconducting rings, which are therefore expected to be an excellent model system. We measure the susceptibility of many rings, one ring at a time, using a scanning SQUID that can isolate magnetic signals from seven orders of magnitude larger background applied flux. We find that the fluctuation theory describes the results and that a single parameter characterizes the ways in which the fluctuations are especially important at magnetic fields where the critical temperature is suppressed.
dc.descriptionReprinted with permission from AAAS
dc.identifierhttps://arxiv.org/abs/0901.0294
dc.identifierhttp://arxiv.org/abs/0901.0294
dc.identifierScience 318, 1440 (2007)
dc.identifierdoi:10.1126/science.1148758
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/214337
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleFluctuation Superconductivity in Mesoscopic Aluminum Rings
dc.typetext

Files

Collections

arXiv