Title :
Nine gigahertz impedance measurements on Ta and Nb point constants
Author :
Claridge, D.E. ; Giffard, R.P. ; Michelson, P.F. ; Fairbank, W.M.
Author_Institution :
IEEE TMAG
fDate :
1/1/1977 12:00:00 AM
Abstract :
The 9 GHz complex impedance of a number of niobium and tantalum superconducting point contacts has been measured as a function of dc bias current. In order to obtain more information, the I-V curve of each junction was also recorded. The impedance measurements are in qualitative agreement with predictions based on the resistively shunted junction model modified to include noise.
Keywords :
Josephson devices; Current measurement; Current-voltage characteristics; Frequency measurement; Impedance measurement; Josephson junctions; Niobium; Proximity effect; Superconducting device noise; Superconducting microwave devices; Voltage;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1977.1059344
