Analytic approach to transport in superconducting junctions with arbitrary carrier density
F. Setiawan, Johannes Hofmann
Abstract
By developing a general framework for transport across superconducting junctions that goes beyond the standard Andreev approximation, two crucial transport signatures are proposed for $s$-wave Josephson junctions along the BCS-BEC crossover: negative differential conductance as a signature of unitarity and a complete suppression of multiple-Andreev-reflection-induced current as a hallmark of the splitting point.
Topics & Concepts
Andreev reflectionJosephson effectSuperconductivityCondensed matter physicsCrossoverPhysicsConductanceComputer scienceArtificial intelligencePhysics of Superconductivity and MagnetismQuantum and electron transport phenomenaCold Atom Physics and Bose-Einstein Condensates