Microscopic model for multiple flux transitions in mesoscopic superconducting loopsстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:A microscopic model is constructed which is able to describe multiple magnetic. ux transitions as observed in recent ultra-low temperature tunnel experiments on an aluminum superconducting ring with normal-metal-insulator-superconductor junctions (Phys. Rev. B, 70 ( 2004) 064514). The unusual multiple. ux quantum transitions are explained by the formation of metastable states with large vorticity. Essential in our description is the modi. cation of the pairing potential and the superconducting density of states by a sub- critical value of the persistent current which modulates the measured tunnel current. We also speculate on the importance of the injected non- equilibrium quasiparticles on the stability of these metastable states.