Cooper pair splitting in diffusive magnetic SQUIDs
Abstract
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 realises a junction with sample-dependent and critical current. Cooper pair splitting between the two arms plays a major role and leads to 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.
Keywords
Cite
@article{arxiv.1609.01234,
title = {Cooper pair splitting in diffusive magnetic SQUIDs},
author = {P. A. Ioselevich and P. M. Ostrovsky and Ya. V. Fominov and M. V. Feigelman},
journal= {arXiv preprint arXiv:1609.01234},
year = {2018}
}
Comments
7 pages, 3 figures. Version identical to journal version. Results unchanged. Manuscript has been extended, some intermediate calculation steps added, Eqs. (12)-(14). Clarified the relation with Refs [23,24]. The applicability range of Eqs. (16),(17) has been corrected. Minor corrections throughout the text. Added references