Article Dans Une Revue Physical Review Letters Année : 2009

Magnetic moment manipulation by a Josephson current

Résumé

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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Dates et versions

hal-00333601 , version 1 (23-10-2008)
hal-00333601 , version 2 (08-12-2008)
hal-00333601 , version 3 (08-01-2009)

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François Konschelle, Alexandre I. Buzdin. Magnetic moment manipulation by a Josephson current. Physical Review Letters, 2009, 102, pp.017001. ⟨10.1103/PhysRevLett.102.017001⟩. ⟨hal-00333601v3⟩

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