Quantum resonances of weakly linked, mesoscopic, superconducting dots

Lambert, Colin and Martin, Andrew (1994) Quantum resonances of weakly linked, mesoscopic, superconducting dots. Journal of Physics: Condensed Matter, 6 (16). L221-L226. ISSN 0953-8984

Abstract

We examine quantum properties of mesoscopic, Josephson coupled superconducting dots, in the limit that charging effects and quantization of energy levels within the dots are negligible, but quasi-particle transmission into the weak link is not. We demonstrate that quasi-particle resonances lead to current-phase relations, which deviate markedly from those of weak links connecting macroscopic superconductors. Results for the steady state DC Josephson current of two coupled dots are presented.