SELFCONSISTENT CURRENT-VOLTAGE CHARACTERISTICS OF NORMAL-SUPERCONDUCTOR INTERFACES

Abstract

We study the nonlinear transport properties of NS (normal-superconductor) and NSN structures by means of a self-consistent microscopic description. A nonzero superfluid velocity causes the various quasiparticle channels within S to open at different voltages. The gap reduction is very sensitive to the details of quasiparticle scattering. At low temperatures, superconductivity, some times in a peculiar gapless form, may survive up to voltages much higher that $k_B{T}_c/e$. The minimum voltage for quasiparticle transmission is shown to decrease strongly with temperature and with the transmittivity of the barrier.

Latex file, 11 pages, two figures available upon request [email protected]

References in corpus (2)

• Microscopic Theory of Josephson Mesoscopic Constrictions
• Crossover from the Josephson effect to bulk superconducting flow

Cited by in corpus (10)

• Phase coherent transport in hybrid superconducting nanostructures
• Entangled electron current through finite size normal-superconductor tunneling structures
• Self-consistent scattering description of transport in normal-superconductor structures
• Bi-stability in voltage-biased NISIN structures
• Microscopic self-consistent theory of Josephson junctions including dynamical electron correlations
• Supercurrent flow through an effective double barrier structure
• Quasiclassical theory of charge transport across mesoscopic normal metal-superconducting heterostructures with current conservation
• Transport in normal-superconductor-normal structures with local conservation of current
• Transverse Cooper-Pair Rectifier
• Absence of charge backscattering in the nonequilibrium current of normal-superconductor structures