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Spontaneous Supercurrent Induced by Ferromagnetic π Junctions

Bauer, Andreas ; Bentner, Johannes ; Aprili, M. ; Della Rocca, M. L. ; Reinwald, Matthias ; Wegscheider, Werner ; Strunk, Christoph
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Date of publication of this fulltext: 11 Jan 2010 13:08


Abstract

We present magnetization measurements of mesoscopic superconducting niobium loops containing a ferromagnetic (PdNi) π junction. The loops are prepared on top of the active area of a micro-Hall sensor based on high mobility GaAs/AlGaAs heterostructures. We observe asymmetric switching of the loop between different magnetization states when reversing the sweep direction of the magnetic field. This ...

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