https://doi.org/10.1140/epjb/e2006-00264-0
Critical temperature and interface transparency of N/S/N triple layers: theory and experiment
1
Belarus State University of Informatics and Radioelectronics, P. Brovka str. 6, Minsk, 220013, Belarus
2
Dipartimento di Fisica “E.R. Caianiello” and CNR/INFM – Laboratorio Regionale SuperMat, Università degli Studi di Salerno, Baronissi, 84081, Italy
Corresponding author: a attanasio@sa.infn.it
Received:
13
April
2006
Revised:
25
May
2006
Published online:
29
June
2006
The influence of the finite transparency, 
, of superconductor/normal metal
(S/N) interface on the critical temperature of proximity coupled layered
structures is investigated in the dirty limit on the basis of the
microscopic equations solved exactly by a matrix method. The calculated
theoretical curves satisfactory reproduce the experimental dependencies of
the critical temperature on the thickness of the superconducting layers in
N/S/N trilayers. The relation between the transparency coefficient and the
normal metal coherence length is also discussed.
PACS: 74.45.+c – Proximity effects; Andreev effect; SN and SNS junctions / 74.78.Fk – Multilayers, superlattices, heterostructures
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006
