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arXiv · 0810.4286

Magnetic moment manipulation by a Josephson current

François Konschelle·Alexandre Buzdin
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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.

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François Konschelle, Alexandre Buzdin. 2009-01-08. Magnetic moment manipulation by a Josephson current. https://doi.org/10.1103/physrevlett.102.017001

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