Mutual synchronization of spin torque nano-oscillators through a long-range and tunable electrical coupling scheme

  1. Lebrun, R.
  2. Tsunegi, S.
  3. Bortolotti, P.
  4. Kubota, H.
  5. Jenkins, A. S.
  6. Romera, M. 1
  7. Yakushiji, K.
  8. Fukushima, A.
  9. Grollier, J.
  10. Yuasa, S.
  11. Cros, V.
  1. 1 Unite´ Mixte de Physique CNRS, Thales, Universite´ Paris-Sud, Universite´ Paris-Saclay, Palaiseau 91767, France
Revista:
Nature Communications

ISSN: 2041-1723

Año de publicación: 2017

Volumen: 8

Número: 1

Páginas: 15825 -1-15825-7

Tipo: Artículo

DOI: 10.1038/NCOMMS15825 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Nature Communications

Objetivos de desarrollo sostenible

Resumen

The concept of spin-torque-driven high-frequency magnetization dynamics, allows the potential construction of complex networks of non-linear dynamical nanoscale systems, combining the field of spintronics and the study of non-linear systems. In the few previous demonstrations of synchronization of several spin-torque oscillators, the short-range nature of the magnetic coupling that was used has largely hampered a complete control of the synchronization process. Here we demonstrate the successful mutual synchronization of two spin-torque oscillators with a large separation distance through their long range self-emitted microwave currents. This leads to a strong improvement of both the emitted power and the linewidth. The full control of the synchronized state is achieved at the nanoscale through two active spin transfer torques, but also externally through an electrical delay line. These additional levels of control of the synchronization capability provide a new approach to develop spin-torque oscillator-based nanoscale microwave-devices going from microwave-sources to bio-inspired networks.

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