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Phase locking dynamics of dipolarly coupled vortex-based spin transfer oscillators

A. D. Belanovsky, N. Locatelli, P. N. Skirdkov, F. Abreu Araujo, J. Grollier, K. A. Zvezdin, V. Cros, and A. K. Zvezdin
Phys. Rev. B 85, 100409(R) – Published 30 March 2012

Abstract

Phase locking dynamics of dipolarly coupled vortices excited by spin-polarized current in two identical nanopillars is studied as a function of the interpillar distance L. Numerical study and an analytical model have proved the remarkable efficiency of magnetostatic interaction in achieving phase locking. Investigating the dynamics in the transient regime toward phase locking, we extract the evolution of the locking time τ, the coupling strength μ, and the interaction energy W. Finally, we compare this coupling energy with the one obtained by a simple model.

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  • Received 5 November 2011

DOI:https://doi.org/10.1103/PhysRevB.85.100409

©2012 American Physical Society

Authors & Affiliations

A. D. Belanovsky1, N. Locatelli2, P. N. Skirdkov1, F. Abreu Araujo3, J. Grollier2, K. A. Zvezdin1,4, V. Cros2, and A. K. Zvezdin1

  • 1A. M. Prokhorov General Physics Institute, RAS, Vavilova, 38, 119991 Moscow, Russia
  • 2Unité Mixte de Physique CNRS/Thales, 1 avenue A. Fresnel, 91767 Palaiseau, France and Université Paris–Sud, 91405 Orsay, France
  • 3Université Catholique de Louvain, 1 place de l’Université, 1348 Louvain-la-Neuve, Belgium
  • 4Istituto P.M. srl, via Grassi, 4, 10138 Torino, Italy

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Issue

Vol. 85, Iss. 10 — 1 March 2012

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