Generation of polarized spin-triplet Cooper pairings by magnetic barriers in superconducting junctions
Shun Tamura, Yukio Tanaka, Takehito Yokoyama
DOI 10.1103/PhysRevB.107.054501 · Physical Review B
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Abstract
We investigate the proximity effect in an s-wave superconductor/ferromagnetic metal with a Rashba spin-orbit coupling/diffusive normal metal junction and an s-wave superconductor/noncollinear magnetic metal/diffusive normal metal junction. We show the generation of polarized spin-triplet pairings in the diffusive normal metal due to coherent spin rotation in the intermediate magnetic regions. The emergence of the spin-triplet odd-frequency Cooper pairings can generate a zero-energy peak in the quasiparticle density of states in the diffusive normal metal.
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