Combined Effect of Zener and Quasiparticle Transitions on the Dynamics of Mesoscopic Josephson Junctions

摘要

We study ultra small Josephson junctions using the coherent picture to describe the pair dynamics and the semiclassical approach for the quasiparticles. We find that the dynamics depends crucially on the ratio of the superconducting gap energy delta(T) to the charging energy sq e/2C. The pair 'Block oscillations' can be practically observed when 2delta(T)>sq e/2C; for 2delta(T)