The Application of the Shunted Junction Model to Point Contact Josephson' Junctions

摘要

The authors study the dc I-V characteristics of oxidized Nb-Nb point contacts as a function of temperature, contact pressure, and rf power at 36 GHz. Results for junctions which do not show hysteresis have been compared in detail with calculations from the resistively shunted junction (RSJ) model first proposed by McCumber. The agreement between the data dand the RSJ model, with a constant shunt resistance and including the effects of noise, is significantly better than has been reported for Dayem bridges. (Author)