Magnetic Moment Manipulation by a Josephson Current

Konschelle, François; Buzdin, Alexandre I.

doi:10.1103/physrevlett.102.017001

Cited by 127 publications

(78 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concept of supercurrent-induced magnetization dynamics suggests an interesting venue for combining the seemingly disparate fields of superconductivity and spintronics. However, magnetization dynamics in a Josephson junction has so far been discussed only in a handful of works [9][10][11][12][13]. In particular, it was demonstrated in Ref.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers

Linder

Yokoyama

2011

Phys. Rev. B

View full text Add to dashboard Cite

We investigate supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers, and demonstrate a variety of effects by solving numerically the Landau-Lifshitz-Gilbert equation. In particular, we demonstrate the possibility to obtain supercurrent-induced magnetization switching for an experimentally feasible set of parameters, and clarify the favorable condition for the realization of magnetization reversal. These results constitute a superconducting analogue to conventional current-induced magnetization dynamics and indicate how spin-triplet supercurrents may be utilized for practical purposes in spintronics.

show abstract

mentioning

confidence: 99%

“…As long as the requirementhω J T c is fulfilled, i.e. the time-dependent part is a small perturbation, one may consider φ(t) as a time-dependent external potential in the static expression for the free energy [13]. Since typically ω J ∼ 1 µV, this condition is easily met.…”

mentioning

confidence: 99%

Supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers

Linder

Yokoyama

2011

Phys. Rev. B

View full text Add to dashboard Cite

show abstract

“…[7][8][9][10][11] The interaction between Cooper pairs and spin waves in the FM is of importance in the transport properties in the 1/10 S/FM/S and S/I/FM/S junctions. The dynamics of θ coupled with spin-waves in the FM has been investigated theoretically [12][13][14][15][16][17][18][19][20] and experimentally. 21 However, the Fiske resonance coupled with spin-waves is not yet observed experimentally.…”

Section: Introductionmentioning

confidence: 99%

Zero-Field Fiske Resonance Coupled with Spin-Waves in Ferromagnetic Josephson Junctions

2014

View full text Add to dashboard Cite

AC Josephson current density in a Josephson junction with DC bias is spatially modulatedby an external magnetic field, and induces an electromagnetic (EM) field inside the junction.The current-voltage (I-V ) curve exhibits peaks due to the resonance between the EM field and the spatially modulated AC Josephson current density. This is called Fiske resonance.Such a spatially modulated Josephson current density can be also induced by a non-uniform insulating barrier and the Fiske resonance appears without external magnetic field. This is called zero-field Fiske resonance (ZFFR). In this paper, we theoretically study the ZFFR coupled with spin-waves in a superconductor/ferromagnetic insulator/superconductor junction (ferromagnetic Josephson junction) with a non-uniform ferromagnetic insulating barrier.The resonant mode coupled with spin-waves can be induced without external magnetic field.We find that the I-V curve shows resonant peaks associated with composite excitations of spin-waves and the EM field in the junction. The voltage at the resonance is obtained as a function of the normal modes of EM field. The ZFFRs coupled with spin-waves are found as peak structures in the DC Josephson current density as a function of bias voltage.

show abstract

“…42 Current-phase relation in a Josephson junction coupled with a magnetic dot has been investigated theoretically by Samokhvalov. 43 Most of the research in this area focused on the proximity effect [44][45][46] rather than on electromagnetic interaction.…”

Section: Introductionmentioning

confidence: 99%

Reversal of magnetization of a single-domain magnetic particle by the ac field of time-dependent frequency

2013

View full text Add to dashboard Cite

We report numerical and analytical studies of the reversal of the magnetic moment of a singledomain magnetic particle by a circularly polarized ac field of time-dependent frequency. For the time-linear frequency sweep, the phase diagrams are computed that illustrate the dependence of the reversal on the frequency sweep rate v, the amplitude of the ac field h, the magnetic anisotropy field d, and the damping parameter α. It is shown that the most efficient magnetization reversal requires a non-linear time dependence of the frequency, ω(t), for which an exact analytical formula is derived with account of damping. The necessary condition of the reversal is h > αd. Implementation of a small-scale magnetization reversal is proposed in which a nanomagnet is electromagnetically coupled to two weak superconducting links controlled by the voltage. Dynamics of such a system is analyzed with account of the back effect of the magnet on the superconducting links.

show abstract

Magnetic Moment Manipulation by a Josephson Current

Cited by 127 publications

References 20 publications

Supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers

Supercurrent-induced magnetization dynamics in a Josephson junction with two misaligned ferromagnetic layers

Zero-Field Fiske Resonance Coupled with Spin-Waves in Ferromagnetic Josephson Junctions

Reversal of magnetization of a single-domain magnetic particle by the ac field of time-dependent frequency

Contact Info

Product

Resources

About