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Josephson coupling across a long single-crystalline Cu nanowire
Authors
Bakurskiy S.
Egorov S.
+9 more
Golubov A.
Goncharova A.
Klimenko A.
Kozlov S.
Kupriyanov M.
Napolskii K.
Ryazanov V.
Skryabina O.
Stolyarov V.
Publication date
1 January 2017
Publisher
Abstract
© 2017 Author(s).We report on a fabrication method and electron-transport measurements for submicron Josephson junctions formed by Cu nanowires coupling to superconducting planar Nb electrodes. The Cu nanowires with a resistivity of ρ C:1 μ Ω cm at low temperatures consisting of single-crystalline segments have been obtained by templated electrodeposition using anodic aluminum oxide as a porous matrix. The current-voltage characteristics of the devices have been studied as a function of temperature and magnetic field. For all junctions, the critical current monotonically decreases with a magnetic field. The measured temperature and magnetic field dependencies are consistent with the model for one-dimensional diffusive superconductor/normal metal/superconductor (SNS) Josephson junctions within the quasiclassical theory of superconductivity
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Last time updated on 07/05/2019