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  • Title: Spin-dependent cooper pair phase and pure spin supercurrents in strongly polarized ferromagnets.
    Author: Grein R, Eschrig M, Metalidis G, Schön G.
    Journal: Phys Rev Lett; 2009 Jun 05; 102(22):227005. PubMed ID: 19658894.
    Abstract:
    We study heterostructures of singlet superconductors and strongly spin-polarized ferromagnets and show that a relative phase arises between the superconducting proximity amplitudes in the two ferromagnetic spin bands. We find a tunable pure spin supercurrent in a spin-polarized ferromagnet contacted with only one superconductor electrode. We show that Josephson junctions are most effective for a spin polarization P approximately 0.3, and that critical currents for positive and negative bias differ for a high transmission Josephson junction, due to a relative phase between single and double pair transmission.
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