Magnetic moment manipulation by a Josephson current
Superconductivity
2009-01-08 v3 Mesoscale and Nanoscale Physics
Abstract
We consider a Josephson junction where the weak-link is formed by a non-centrosymmetric ferromagnet. In such a junction, the superconducting current acts as a direct driving force on the magnetic moment. We show that the a.c. Josephson effect generates a magnetic precession providing then a feedback to the current. Magnetic dynamics result in several anomalies of current-phase relations (second harmonic, dissipative current) which are strongly enhanced near the ferromagnetic resonance frequency.
Cite
@article{arxiv.0810.4286,
title = {Magnetic moment manipulation by a Josephson current},
author = {François Konschelle and Alexandre Buzdin},
journal= {arXiv preprint arXiv:0810.4286},
year = {2009}
}