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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 11.13: Talk

Tuesday, March 28, 2006, 12:45–13:00, HSZ 301

Nonequilibrium magnetism with superconductors — •Fabio Taddei1, Francesco Giazotto1, Rosario Fazio1,2, and Fabio Beltram11NEST-CNR-INFM & Scuola Normale Superiore, Pisa — 2International School for Advanced Studies (SISSA), Trieste, Italy

Electrostatic control of the magnetization of a normal mesoscopic conductor is analyzed in a hybrid superconductor-normal-superconductor system. This effect stems from the interplay between the non-equilibrium condition in the normal region and the Zeeman splitting of the quasiparticle density of states of the superconductor subjected to a static in-plane magnetic field. Unexpected spin-dependent effects such as magnetization suppression, diamagnetic-like response of the susceptibility as well as spin-polarized current generation are the most remarkable features presented. The impact of scattering events is evaluated and let us show that this effect is compatible with realistic material properties and fabrication techniques.

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