Tunable quasiparticle trapping in Meissner and vortex states of mesoscopic superconductors.

ABSTRACT: Nowadays, superconductors serve in numerous applications, from high-field magnets to ultrasensitive detectors of radiation. Mesoscopic superconducting devices, referring to those with nanoscale dimensions, are in a special position as they are easily driven out of equilibrium under typical operating conditions. The out-of-equilibrium superconductors are characterized by non-equilibrium quasiparticles. These extra excitations can compromise the performance of mesoscopic devices by introducing, for example, leakage currents or decreased coherence time in quantum devices. By applying an external magnetic field, one can conveniently suppress or redistribute the population of excess quasiparticles. In this article, we present an experimental demonstration and a theoretical analysis of such effe

SUBMITTER: Taupin M 

PROVIDER: S-EPMC4799370 | biostudies-literature | 2016 Mar

REPOSITORIES: biostudies-literature