Superconducting Fluctuations and the Transmission Line Model

摘要

A recent calculation of the amplitude of charge-imbalance fluctuations in superconductors is shown to be consistent with the transmission line model of charge-imbalance dynamics due to Kadin et al. when thermal noise across the capacitance of the line is included in the model. This agreement justifies the calculation of the mean square amplitude of fluctuations of the local supercurrent by using the transmission line inductance. For a two-dimensional film, this results in an intrinsic pair-breaking rate which is proportional to the resistance per square of the film. (ERA citation 06:027131)