Observability of Quasiparticle-Pair Interference Current in Superconducting Weak Links

摘要

Calculations of static I(o)-V(o) curves, and of the heights of steps induced by rf radiations, have been carried out for current biased Josephson junctions with both a phase-independent quasiparticle conductance G(o) and a phase-dependent quasiparticle pair 'interference' conductance G(1) cos(phi). Little or no effect of the term in G1cos(phi) is found for junctions with zero capacitance. It thus appears that this term can be neglected in many practical applications of weak links. (Author)