title: Spin-orbit coupling and anomalous Josephson effect in nanowires.
abstract: A superconductor-semiconducting nanowire-superconductor heterostructure in the presence of spin-orbit coupling and magnetic field can support a supercurrent even in the absence of phase difference between the superconducting electrodes. We investigate this phenomenon—the anomalous Josephson effect—employing a model capable of describing many bands in the normal region. We discuss the geometrical and symmetry conditions required to have a finite anomalous supercurrent, and in particular we show that this phenomenon is enhanced when the Fermi level is located close to a band opening in the normal region.
authors.affiliation: Dipartimento di Fisica, Università di Napoli 'Federico II', Monte S.Angelo, I-80126 Napoli, Italy. CNR-SPIN, Monte S.Angelo via Cinthia, I-80126 Napoli, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Campagnano
authors.forename: P
authors.initials: P
authors.lastname: Lucignano
authors.forename: D
authors.initials: D
authors.lastname: Giuliano
authors.forename: A
authors.initials: A
authors.lastname: Tagliacozzo