Dresden 2011 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 10: Poster Session: Superconductivity

TT 10.47: Poster

Montag, 14. März 2011, 14:00–18:00, P4

Triplet-superconductor-ferromagnet-triplet-superconductor junctions: Effects of finite width — •Bogusz Bujnowski, P.M.R. Brydon, and Carsten Timm — Institut für Theoretische Physik, Technische Universität Dresden, Germany

We study charge and spin transport in a junction involving triplet superconductors and ferromagnets. We analyze this system by using the Bogoliubov-de Gennes wavefunctions to construct the Green's function, from which we can obtain formulas for the Josephson currents in terms of the Andreev reflection coefficients. We investigate the occurrence of the 0-pi transition for a magnetic tunneling barrier of finite width, and examine the appropriateness of the usual delta-function approximation for the tunneling region.