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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/11594

Title: Nanocrystalline boron-doped diamond films, a mixture of BCS-like and non-BCS-like superconducting grains
Authors: Dahlem, F.
Achatz, P.
WILLIAMS, Oliver
Araujo, D.
Courtois, H.
Bustarret, E.
Issue Date: 2010
Publisher: WILEY-V C H VERLAG GMBH
Citation: PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 207(9). p. 2064-2068
Abstract: Scanning tunneling topography and spectroscopy are performed below 100 mK on granular nanocrystalline boron-doped diamond (BDD) films. We found the superconductivity behavior to follow mainly the granular features of the BDD films. The temperature dependence of the local differential conductance spectra shows our nanocrystalline BDD films as made of grains with a supercondutivity either BCS-like or non-BCS-like. Such a distribution is not discernible in transport measurements, which present a sharp macroscopic superconducting transition at a temperature of a few Kelvins. Our local scanning tunneling microscopies also confirm the good coupling between these grains: only a few opaque interfaces are detected. Such a transparency of intergrain interfaces is responsible for a proximity effect in weakly superconductive grains and an inverse proximity effect in strongly superconducting grains. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Notes: [Dahlem, F.; Achatz, P.; Courtois, H.; Bustarret, E.] CNRS, Inst Neel, F-38042 Grenoble, France. [Dahlem, F.; Achatz, P.; Courtois, H.; Bustarret, E.] Univ Grenoble 1, F-38042 Grenoble, France. [Williams, O. A.] Hasselt Univ, Inst Mat Res, B-3590 Diepenbeek, Belgium. [Araujo, D.] Univ Cadiz, Dept Ciencia Mat & IMyQI, Puerto Real 11510, Spain.
URI: http://hdl.handle.net/1942/11594
DOI: 10.1002/pssa.201000013
ISI #: 000282766100011
ISSN: 1862-6300
Category: A1
Type: Journal Contribution
Validation: ecoom, 2011
Appears in Collections: Research publications

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