Triplet Josephson effect with magnetic feedback in a superconductor-ferromagnet heterostructure.
We study the ac Josephson effect in a superconductor-ferromagnet heterostructure with a variable magnetic configuration. The system supports triplet proximity correlations whose dynamics is coupled to the magnetic dynamics. This feedback dramatically modifies the behavior of the junction. The current-phase relation becomes double periodic at both very low and high Josephson frequencies omegaJ. At intermediate frequencies, the periodicity in omegaJt may be lost.
Kavli Institute of Nanoscience, Delft University of Technology, 2628 CJ Delft, The Netherlands.
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