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Regular version of the site

Article

Cooper pair splitting in diffusive magnetic SQUIDs

Physical Review B: Condensed Matter and Materials Physics. 2017. Vol. 95. No. 9. P. 094508-1-094508-6.

We study Josephson junctions with weak links consisting of two parallel disordered arms with magnetic
properties: ferromagnetic, half-metallic, or normal with magnetic impurities. In the case of long links, the
Josephson effect is dominated by mesoscopic fluctuations. In this regime, the system realizes a phi_0 junction with
sample-specific phi_0 and critical current. Cooper pair splitting between the two arms plays a major role and leads
to 2*Phi_0 periodicity of the current as a function of flux between the arms. We calculate the current and its flux and
polarization dependence for the three types of magnetic links.