Grein, R., Eschrig, Matthias, Metalidis, G. and Schön, Gerd (2009) Spin-Dependent Cooper Pair Phase and Pure Spin Supercurrents in Strongly Polarized Ferromagnets. Physical Review Letters, 102 (22).
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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 similar to 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.
This is a Submitted version This version's date is: 4/6/2009 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/576cb0c7-437f-7108-9c0d-5dea418d8920/1/
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