The Josephson effect between triplet superconductors through a finite ferromagnetic barrier.
Charge and spin transport in a junction involving two triplet superconductors and a ferromagnetic barrier are studied. We use Bogoliubov-de Gennes wavefunctions to construct the Green's function, from which we obtain the Josephson currents in terms of the Andreev reflection coefficients. We focus on the consequences of a finite barrier width for the occurrence of 0-π transitions and for the spin currents, and examine the appropriateness of the common δ-function approximation for the tunneling region.
Institut für Theoretische Physik, Technische Universität Dresden, Dresden, Germany. bogusz.bujnowski@mailbox.tu-dresden.de
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Bujnowski
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Timm
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Brydon