Ferromagnetic Josephson junction with precessing magnetization
M. Houzet
TL;DR
This paper predicts a large critical Josephson current in a superconductor/ferromagnet/superconductor junction with precessing magnetization, due to a dynamically induced long-range triplet proximity effect, which can be observed near ferromagnetic resonance.
Contribution
It introduces a theoretical calculation of the Josephson current in a precessing ferromagnetic junction, highlighting a novel long-range triplet proximity effect under non-equilibrium conditions.
Findings
Large critical current predicted due to triplet proximity effect
Stationary Josephson current can flow without an ac component
Effect observable near ferromagnetic resonance
Abstract
The Josephson current in a diffusive superconductor/ferromagnet/superconductor junction with precessing magnetization is calculated within the quasiclassical theory of superconductivity. When the junction is phase-biased, a stationary current (without a.c. component) can flow through it despite the non-equilibrium condition. A large critical current is predicted due to a dynamically induced long range triplet proximity effect. Such effect could be observed in a conventional hybrid device close to the ferromagnetic resonance.
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