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Exploring the proximity effect in Mo/Au bilayers

AuthorsFàbrega, Lourdes ; Camón, Agustín; Strichovanec, Pavel; Pobes, Carlos
Issue Date2018
CitationApplied Superconductivity Conference (2018)
AbstractWe report on the sensitivity of superconducting transition temperature (Tc) to the individual layers' thickness in Mo/Au proximity bilayers to be used in transition-edge sensors (TESs). The achieved good reproducibility and quality of the bilayers allow a clear determination of the superconducting critical temperature Tc as a function of the Mo and Au thicknesses. One objective of this work is to analyse the quality of the Mo/Au interface and to assess the possible effects of the double Au layer we use to fabricate these bilayers and TESs based on them. Experimental data are analysed on the basis of Usadel equations using the model developed by Martinis and co-workers, in which the proximity effect in the bilayer is mainly governed by the interface transparency between the superconductor and the normal metal. We find that this model describes quite well the behavior of Tc, even for quite thick Au layers, and that the double Au layer does not play any relevant role on the proximity effect.
DescriptionResumen del trabajo presentado a la Applied Superconductivity Conference (ASC), celebrada en Washington State Convention Center (US) del 28 de octubre al 2 de noviembre de 2018.
Appears in Collections:(ICMA) Comunicaciones congresos
(ICMAB) Comunicaciones congresos
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