Novel pinning phenomena in a superconducting film with a square lattice of artificial pinning centers

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dc.creatorJiang, Z.
dc.creatorDikin, D. A.
dc.creatorMetlushko, V. V.
dc.creatorMoshchalkov, V. V.
dc.creatorChandrasekhar, V.
dc.date2003-12-19
dc.date.accessioned2026-07-07T06:27:40Z
dc.date.available2026-07-07T06:27:40Z
dc.descriptionWe study the transport properties of a superconducting Nb film with a square lattice of artificial pinning centers (APCs) as a function of dc current, at a temperature close to the superconducting transition temperature of the film. We find that, at low dc currents, the differential resistance of the film shows the standard matching field anomaly, that is, the differential resistance has a local minimum at magnetic fields corresponding to an integer number of flux lines per APC. However, at higher dc currents, the differential resistance at each matching field turns to a local maximum, which is exactly opposite to the low current behavior. This novel effect might indicate that the flux lines in the APC system change their flow mode as the dc current is increased.
dc.description10 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0312508
dc.identifierhttp://arxiv.org/abs/cond-mat/0312508
dc.identifierAPL 84, 5371 (2004)
dc.identifierdoi:10.1063/1.1767278
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/97478
dc.subjectMesoscale and Nanoscale Physics
dc.titleNovel pinning phenomena in a superconducting film with a square lattice of artificial pinning centers
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