Density of states and supercurrent in diffusive SNS junctions: role of nonideal interfaces and spin-flip scattering
نویسندگان
چکیده
J.C. Hammer, 2 J.C. Cuevas, 2, 4 F.S. Bergeret, and W. Belzig Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany Departamento de F́ısica Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain Forschungszentrum Karlsruhe, Institut für Nanotechnologie, D-76021 Karlsruhe, Germany
منابع مشابه
Density of states and supercurrent in diffusive SNS junctions: Roles of nonideal interfaces and spin-flip scattering
J. C. Hammer,1,2 J. C. Cuevas,2,3,4 F. S. Bergeret,3 and W. Belzig1 1Fachbereich Physik, Universität Konstanz, D-78457 Konstanz, Germany 2Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany 3Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid, Spain 4Forschungszentrum Karlsruhe, Institut für Nanotechno...
متن کاملJosephson effect due to odd-frequency pairs in diffusive half metals.
Motivated by a recent experiment [Keizer et al., Nature (London) 439, 825 (2006)], we study the Josephson effect in superconductor/diffusive half metal/superconductor junctions using the recursive Green function method. The spin-flip scattering at the junction interfaces opens the Josephson channel of the odd-frequency spin-triplet Cooper pairs. As a consequence, the local density of states in ...
متن کاملمشخصات پیوندگاههای ابررسانا - فرومغناطیس - ابررسانا با پایانههای ابررسانای یکتایی
We study numerically the electronic heat capacity, spin and charge current in a diffusive Superconductor-Ferromagnetic-Superconductor systems، with singlet superconducting leads and non-uniform ferromagnetic layer. Specially, we focus on ferromagnetic layer with domain wall and conical structures incorporation the spin-active interfaces. We investigate, how the 0-π transition is influenced by n...
متن کاملTheory of microwave-assisted supercurrent in diffusive SNS junctions.
The observation of very large microwave-enhanced critical currents in superconductor-normal-metal-superconductor (SNS) junctions at temperatures well below the critical temperature of the electrodes has remained without a satisfactory theoretical explanation for more than three decades. Here we present a theory of the supercurrent in diffusive SNS junctions under microwave irradiation based on ...
متن کاملProbing spin-flip scattering in ballistic nanosystems.
Because spin-flip length is longer than the electron mean-free path in a metal, past studies of spin-flip scattering are limited to the diffusive regime. We propose to use a magnetic double barrier tunnel junction to study spin-flip scattering in the nanometer sized spacer layer near the ballistic limit. We extract the voltage and temperature dependence of the spin-flip conductance Gs in the sp...
متن کامل