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Locatelli N, Hamadeh A, Abreu Araujo F, et al. Efficient Synchronization of Dipolarly Coupled Vortex-Based Spin Transfer Nano-Oscillators. Sci Rep. 2015;5:17039doi: 10.1038/srep17039.
Locatelli, N., Hamadeh, A., Abreu Araujo, F., Belanovsky, A. D., Skirdkov, P. N., Lebrun, R., Naletov, V. V., Zvezdin, K. A., Muñoz, M., Grollier, J., Klein, O., Cros, V., & de Loubens, G. (2015). Efficient Synchronization of Dipolarly Coupled Vortex-Based Spin Transfer Nano-Oscillators. Scientific reports, 517039. https://doi.org/10.1038/srep17039
Locatelli, Nicolas, et al. "Efficient Synchronization of Dipolarly Coupled Vortex-Based Spin Transfer Nano-Oscillators." Scientific reports vol. 5 (2015): 17039. doi: https://doi.org/10.1038/srep17039
Locatelli N, Hamadeh A, Abreu Araujo F, Belanovsky AD, Skirdkov PN, Lebrun R, Naletov VV, Zvezdin KA, Muñoz M, Grollier J, Klein O, Cros V, de Loubens G. Efficient Synchronization of Dipolarly Coupled Vortex-Based Spin Transfer Nano-Oscillators. Sci Rep. 2015 Nov 26;5:17039. doi: 10.1038/srep17039. PMID: 26608230; PMCID: PMC4660301.
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Sci Rep. 2015 Nov 26;5:17039. doi: 10.1038/srep17039.

Efficient Synchronization of Dipolarly Coupled Vortex-Based Spin Transfer Nano-Oscillators.

Scientific reports

Nicolas Locatelli, Abbass Hamadeh, Flavio Abreu Araujo, Anatoly D Belanovsky, Petr N Skirdkov, Romain Lebrun, Vladimir V Naletov, Konstantin A Zvezdin, Manuel Muñoz, Julie Grollier, Olivier Klein, Vincent Cros, Grégoire de Loubens

Affiliations

  1. Unité Mixte de Physique CNRS, Thales, Univ. Paris-Sud, Université Paris-Saclay, F91767 Palaiseau, France.
  2. Service de Physique de l'Etat Condensé, CEA, CNRS, Université Paris-Saclay, CEA Saclay, F91191 Gif-sur-Yvette, France.
  3. Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, BE-1348 Louvain-la-Neuve, Belgium.
  4. Moscow Institute of Physics and Technology (State University), Institutskiy per. 9, 141700 Dolgoprudny, Russia.
  5. A. M. Prokhorov General Physics Institute, RAS, Vavilova 38, Moscow, Russia.
  6. Institute of Physics, Kazan Federal University, Kazan 420008, Russian Federation.
  7. Istituto P.M. srl, Via Grassi 4, Torino, Italy.
  8. Instituto de Microelectrónica de Madrid-IMM (CNM-CSIC), Isaac Newton 8-PTM, 28760 Tres Cantos, Madrid, Spain.

PMID: 26608230 PMCID: PMC4660301 DOI: 10.1038/srep17039

Abstract

Due to their nonlinear properties, spin transfer nano-oscillators can easily adapt their frequency to external stimuli. This makes them interesting model systems to study the effects of synchronization and brings some opportunities to improve their microwave characteristics in view of their applications in information and communication technologies and/or to design innovative computing architectures. So far, mutual synchronization of spin transfer nano-oscillators through propagating spinwaves and exchange coupling in a common magnetic layer has been demonstrated. Here we show that the dipolar interaction is also an efficient mechanism to synchronize neighbouring oscillators. We experimentally study a pair of vortex-based spin transfer nano-oscillators, in which mutual synchronization can be achieved despite a significant frequency mismatch between oscillators. Importantly, the coupling efficiency is controlled by the magnetic configuration of the vortices, as confirmed by an analytical model and micromagnetic simulations highlighting the physics at play in the synchronization process.

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