On-off switch and sign change for a nonlocal Josephson diode in spin-valve Andreev molecules
Erik Wegner Hodt, Jacob Linder
DOI 10.1103/PhysRevB.108.174502 · Physical Review B
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Abstract
Andreev molecules consist of two coherently coupled Josephson junctions and permit nonlocal control over supercurrents. By making the barriers magnetic and thus creating a spin valve, we predict that a nonlocal Josephson diode effect occurs that is switchable via the magnetic configuration of the barriers. The diode effect is turned on, off, or changes its sign depending on whether the spin valve is in a parallel, normal, or antiparallel configuration. These results offer a way to exert complete control over a nonlocal Josephson diode effect via the spin degree of freedom.
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