Spin Josephson effect with a single superconductor

P. M. R. Brydon; Yasuhiro Asano; Carsten Timm

doi:10.1103/PhysRevB.83.180504

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Spin Josephson effect with a single superconductor

P. M. R. Brydon, Yasuhiro Asano, Carsten Timm

DOI 10.1103/PhysRevB.83.180504 · Physical Review B

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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 ↑ and ↓ 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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
LiFeAs Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown