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Bauer, A. and Bentner, J. and Aprili, M. and Della Rocca, L and Strunk, Christoph (2007) Half-integer flux quantization in a superconducting loop with a ferromagnetic pi-junction. Journal of Low Temperature Physics 147.
Bauer, A and Bentner, J and Aprili, M and Della Rocca, L and Reinwald, Matthias and Wegscheider, Werner and Strunk, Christoph (2004) Spontaneous Supercurrent Induced by Ferromagnetic π Junctions. Physical Review Letters (PRL) 92 (21), p. 217001.