Title :
Current-phase relation in Nb-Al based SINIS-type Josephson junctions
Author :
M. Gotz;V.V. Khanin;H. Schulze;A.B. Zorin;J. Niemeyer;M. Grajcar;E. Il´ichev;H.E. Hoenigm;H.-G. Meyer
Author_Institution :
Phys. Tech. Bundesanstalt, Braunschweig, Germany
Abstract :
The supercurrent-phase relation (CPR) of NbAl based Josephson elements of superconductor/insulator/normal conductor/insulator/superconductor-type is deduced from impedance measurements of the phase-biased junction. The chosen temperature range from 1.9 to 8.0 K covers the superconducting transition of the aluminum interlayer below which a pronounced non-harmonic CPR is found. At temperatures higher than the corresponding critical temperature, the CPR did not deviate significantly from purely harmonic shape. Both results are in agreement with theoretical predictions.
Keywords :
"Josephson junctions","Insulation","Temperature distribution","Magnetic flux","Impedance measurement","Superconducting transition temperature","Conductors","Critical current","Coils","Magnetic resonance"
Journal_Title :
IEEE Transactions on Applied Superconductivity
