Josephson supercurrent in Nb/InN-nanowire/Nb junctions

Frielinghaus, R.; Calarco, R.; Weides, M.; Kohlstedt, H.; Batov, I. E.; Schäpers, T.

doi:10.1063/1.3377897

Journal Article

Josephson supercurrent in Nb/InN-nanowire/Nb junctions

Frielinghaus, R.FZJ* ; Batov, I. E.FZJ* ; Weides, M.FZJ* ; Kohlstedt, H.FZJ* ; Calarco, R.FZJ* ; Schäpers, T.FZJ*

2010
American Institute of Physics Melville, NY

Applied physics letters 96, 132504 (2010) [10.1063/1.3377897]

This record in other databases:

Please use a persistent id in citations: http://hdl.handle.net/2128/17423 doi:10.1063/1.3377897

Abstract: We experimentally studied the Josephson supercurrent in Nb/InN-nanowire/Nb junctions. Large critical currents up to 5.7 mu A have been achieved, which proves the good coupling of the nanowire to the superconductor. The effect of a magnetic field perpendicular to the plane of the Josephson junction on the critical current has been studied. The observed monotonous decrease in the critical current with magnetic field is explained by the magnetic pair-breaking effect in planar Josephson junctions of ultra-narrow width [J. C. Cuevas and F. S. Bergeret, Phys. Rev. Lett. 99, 217002 (2007)].

Keyword(s): J ; critical current density (superconductivity) (auto) ; III-V semiconductors (auto) ; indium compounds (auto) ; nanowires (auto) ; niobium (auto) ; superconducting junction devices (auto) ; wide band gap semiconductors (auto)

Classification:

Physics, Applied

Note: We are grateful to A. A. Golubov (Twente University, The Netherlands) and V. V. Ryazanov (Institute of Solid State Physics RAS, Chernogolovka) for fruitful discussions and H. Kertz for support during the measurements. I. E. B. acknowledges the Russian Foundation for Basic Research, Project No. RFBR 09-02-01499 for financial support.

Contributing Institute(s):

Research Program(s):