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Dresden 2006 – scientific programme

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TT: Tiefe Temperaturen

TT 11: Superconductivity: Heterostructures, Andreev Scattering, Proximity Effect, Coexistence

TT 11.4: Talk

Tuesday, March 28, 2006, 10:15–10:30, HSZ 301

Interplay of magnetic and superconducting proximity effects in FSF trilayers — •Tomas Lofwander, Thierry Champel, Johannes Durst, and Matthias Eschrig — Institut für Theoretische Festkörperphysik, Universität Karlsruhe, 76128 Karlsruhe

We present theoretical results on the interplay of magnetic and superconducting orders in diffusive ferromagnet-superconductor-ferromagnet trilayers. The induced triplet superconducting correlations throughout the trilayer lead to an induced spin magnetization. We include self-consistency of the order parameter in the superconducting layer at arbitrary temperatures, arbitrary interface transparency, and any relative orientation of the exchange fields in the two ferromagnets. We propose to use the torque on the trilayer in an external magnetic field as a probe of the presence of triplet correlations in the superconducting phase.

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