Spin Josephson effect with a single superconductor

Details Spin Josephson effect with a single superconductor Spin Josephson effect with a single superconductor

2010-10-20

arxiv.org/abs/1010.4238v2

Phys. Rev. B 83, 180504(R) (2011)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures, references added, published version

Scientific paper

10.1103/PhysRevB.83.180504

A thin ferromagnetic layer on a bulk equal-spin-pairing triplet superconductor is shown to mediate a Josephson coupling between the spin $\uparrow$ and $\downarrow$ condensates of the superconductor. By deriving analytic expressions for the bound states at the triplet superconductor-ferromagnet interface, we show that this spin Josephson effect establishes an effective anisotropy axis in the ferromagnetic layer. The associated Josephson spin current is predicted to cause a measurable precession of the magnetization about the vector order parameter of the triplet superconductor.

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