The role of critical current on point contact Andreev Reflection spectrum between a normal metal and a superconductor

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dc.creatorSheet, G.
dc.creatorMukhopadhyay, S.
dc.creatorRaychaudhuri, P.
dc.date2003-11-28
dc.date.accessioned2026-07-07T06:30:52Z
dc.date.available2026-07-07T06:30:52Z
dc.descriptionThe point contact spectrum between a normal metal and a superconductor often shows unexpected sharp dips in the conductance at voltage values larger than the superconducting energy gap. These dips are not predicted in the Blonder-Tinkham-Klapwizk (BTK) theory, commonly used to analyse these contacts. We present here a systematic study of these dips in a variety of contacts between different combinations of a superconductor and a normal metal. From the correlation between the characteristics of these dips with the contact area, we can surmise that such dips are caused by the contact not being in the ballistic limit. An analysis of the possible errors introduced while analysing such a spectrum with the standard BTK model is also presented.
dc.description16 pages, PS, figure included
dc.identifierhttps://arxiv.org/abs/cond-mat/0311648
dc.identifierhttp://arxiv.org/abs/cond-mat/0311648
dc.identifierPhys. Rev. B 69, 134507 (2004)
dc.identifierdoi:10.1103/PhysRevB.69.134507
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/98450
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleThe role of critical current on point contact Andreev Reflection spectrum between a normal metal and a superconductor
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