Superconducting proximity effect is studied in superconductor/normal metal trilayers. The dependences of the superconducting transition temperature T-c versus Nb thickness in Cu/Nb/Cu systems and versus Cu thickness in Nb/Cu/Nb ones are described by different values of the microscopical parameters. We attribute this difference to the influence of the external surfaces of the Nb/Cu/Nb hybrids on the superconducting properties of the system. (C) 2007 Elsevier Ltd. All rights reserved.
Role of the external surfaces on the superconducting properties of superconductor/normal metal trilayers
Cirillo C;Attanasio C
2008
Abstract
Superconducting proximity effect is studied in superconductor/normal metal trilayers. The dependences of the superconducting transition temperature T-c versus Nb thickness in Cu/Nb/Cu systems and versus Cu thickness in Nb/Cu/Nb ones are described by different values of the microscopical parameters. We attribute this difference to the influence of the external surfaces of the Nb/Cu/Nb hybrids on the superconducting properties of the system. (C) 2007 Elsevier Ltd. All rights reserved.File in questo prodotto:
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