Bauer, Andreas and Bentner, Johannes and Aprili, M. and Della Rocca, M. L. and Reinwald, Matthias and Wegscheider, Werner and Strunk, Christoph
Spontaneous Supercurrent Induced by Ferromagnetic π Junctions.
Physical Review Letters 92 (21), p. 217001.
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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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