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arXiv · 1010.4238

Spin Josephson effect with a single superconductor

P. M. R. Brydon·Yasuhiro Asano·Carsten Timm
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Abstract

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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P. M. R. Brydon, Yasuhiro Asano, Carsten Timm. 2011-05-20. Spin Josephson effect with a single superconductor. https://doi.org/10.1103/physrevb.83.180504

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