Proximity effect in planar superconducting tunnel junctions containingNb ∕ NiCu
G. P. PEPE
1
,
R. LATEMPA
1
,
L. PARLATO
1
,
Loredana Parlato
1
,
A. RUOTOLO
1
,
G Ausanio
1
,
G. Ausanio
1
,
G. PELUSO
1
,
A. BARONE
1
,
A. A. Golubov
2
,
Ya V Fominov
3
,
Ya. V. Fominov
3
,
M Yu Kupriyanov
4
,
Publication type: Journal Article
Publication date: 2006-02-14
scimago Q1
wos Q2
SJR: 1.303
CiteScore: 6.2
Impact factor: 3.7
ISSN: 24699950, 24699969, 10980121, 1550235X
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Abstract
We present experimental results concerning both the fabrication and characterization of superconducting tunnel junctions containing superconductor/ferromagnet (S/F) bilayers made by niobium (S) and a weak ferromagnetic Ni0.50Cu0.50 alloy. Josephson junctions have been characterized down to T=1.4 K in terms of current-voltage I-V characteristics and Josephson critical current versus magnetic field. By means of a numerical deconvolution of the I-V data the electronic density of states on both sides of the S/F bilayer has been evaluated at low temperatures. Results have been compared with theoretical predictions from a proximity model for S/F bilayers in the dirty limit in the framework of Usadel equations for the S and F layers, respectively. The main physical parameters characterizing the proximity effect in the Nb/NiCu bilayer, such as the coherence length and the exchange field energy of the F metal, and the S/F interface parameters have been also estimated.
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PEPE G. P. et al. Proximity effect in planar superconducting tunnel junctions containingNb∕NiCusuperconductor/ferromagnet bilayers // Physical Review B. 2006. Vol. 73. No. 5. 054506
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PEPE G. P., LATEMPA R., PARLATO L., Parlato L., RUOTOLO A., Ausanio G., Ausanio G., PELUSO G., BARONE A., Golubov A. A., Golubov A. A., Fominov Ya. V., Fominov Y. V., Kupriyanov M. Yu., Kupriyanov M. Y. Proximity effect in planar superconducting tunnel junctions containingNb∕NiCusuperconductor/ferromagnet bilayers // Physical Review B. 2006. Vol. 73. No. 5. 054506
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TY - JOUR
DO - 10.1103/PhysRevB.73.054506
UR - https://doi.org/10.1103/PhysRevB.73.054506
TI - Proximity effect in planar superconducting tunnel junctions containingNb∕NiCusuperconductor/ferromagnet bilayers
T2 - Physical Review B
AU - PEPE, G. P.
AU - LATEMPA, R.
AU - PARLATO, L.
AU - Parlato, Loredana
AU - RUOTOLO, A.
AU - Ausanio, G
AU - Ausanio, G.
AU - PELUSO, G.
AU - BARONE, A.
AU - Golubov, A. A.
AU - Golubov, Alexander A.
AU - Fominov, Ya V
AU - Fominov, Ya. V.
AU - Kupriyanov, M Yu
AU - Kupriyanov, Mikhail Yu.
PY - 2006
DA - 2006/02/14
PB - American Physical Society (APS)
IS - 5
VL - 73
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
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@article{2006_PEPE,
author = {G. P. PEPE and R. LATEMPA and L. PARLATO and Loredana Parlato and A. RUOTOLO and G Ausanio and G. Ausanio and G. PELUSO and A. BARONE and A. A. Golubov and Alexander A. Golubov and Ya V Fominov and Ya. V. Fominov and M Yu Kupriyanov and Mikhail Yu. Kupriyanov},
title = {Proximity effect in planar superconducting tunnel junctions containingNb∕NiCusuperconductor/ferromagnet bilayers},
journal = {Physical Review B},
year = {2006},
volume = {73},
publisher = {American Physical Society (APS)},
month = {feb},
url = {https://doi.org/10.1103/PhysRevB.73.054506},
number = {5},
pages = {054506},
doi = {10.1103/PhysRevB.73.054506}
}