Size dependence of the Tc and the superconducting energy gap in nanocrystalline thin films of Nb

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dc.creatorBose, Sangita
dc.creatorRaychaudhuri, Pratap
dc.creatorBanerjee, Rajarshi
dc.creatorVasa, Parinda
dc.creatorAyyub, Pushan
dc.date2004-09-01
dc.date.accessioned2026-07-07T06:19:45Z
dc.date.available2026-07-07T06:19:45Z
dc.descriptionIn nanocrystalline Nb films, the superconducting Tc decreases with a reduction in the average particle size below 20nm. We correlate the decrease in Tc with a reduction in the superconducting energy gap measured by point contact spectroscopy. Consistent with the Anderson criterion, no superconducting transition was observed for sizes below 8 nm. We show that the size-dependence of the superconducting properties in this intermediate coupling Type II superconductor is governed by changes in the electronic density of states rather than by phonon softening.
dc.descriptionpdf format 14 pages 4 figures (included)
dc.identifierhttps://arxiv.org/abs/cond-mat/0409018
dc.identifierhttp://arxiv.org/abs/cond-mat/0409018
dc.identifierPhys. Rev. Lett. 95, 147003 (2005)
dc.identifierdoi:10.1103/PhysRevLett.95.147003
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/95136
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleSize dependence of the Tc and the superconducting energy gap in nanocrystalline thin films of Nb
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