Berlin 2012 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 33: Superconductivity, Measuring Devices, Matter at Low Temperature: Poster Session
TT 33.55: Poster
Mittwoch, 28. März 2012, 15:00–19:00, Poster B
Transport through Andreev bound states in a triplet superconductor - ferromagnet - singlet superconductor Josephson junction — •Wei Chen1, Philip M. R. Brydon2, Yasuhiro Asano3, and Dirk Manske1 — 1Max-Planck-Institut für Festkörperforschung, D-70569 Stuttgart — 2Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden — 3Department of Applied Physics, Hokkaido University, Sapporo, 060-8628, Japan
We use microscopic Bogoliubov-de Gennes theory to study a model triplet superconductor - ferromagnet - singlet superconductor Josephson junction. We obtain analytic expressions for the Andreev bound state spectrum, and hence calculate the free energy minimum of the junction, and the spontaneous charge and spin currents. We find that these properties of the junction strongly depend upon the orbital pairing state of the two superconductors. The results are interpreted with the assistance of a tunneling Hamiltonian theory.