Efficient synchronization of dipolarly coupled vortex-based spin transfer nano-oscillators

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

Efficient synchronization of dipolarly coupled vortex-based spin transfer nano-oscillators

Nicolas Locatelli ^{1, 2, *} Abbass Hamadeh ³ Flavio Abreu Araujo ⁴ Anatoly D. Belanovsky ⁵ Petr N. Skirdkov ⁵ Vladimir V. Naletov ³ Konstantin A. Zvezdin ⁵ Manuel Muñoz ⁶ Julie Grollier ¹ Olivier Klein ⁷ Vincent Cros ^{1, *} Romain Lebrun ¹ Grégoire de Loubens ³

* Corresponding author

1 UMP CNRS/THALES - Unité mixte de physique CNRS/Thalès

2 IEF - Institut d'électronique fondamentale

3 LNO - Laboratoire Nano-Magnétisme et Oxydes

SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay

4 IMCN - Institut de la matière condensée et des nanosciences / Institute of Condensed Matter and Nanosciences

5 GPI - A. M. Prokhorov General Physics Institute

6 Instituto Carlos I de Fisica Teorica y Computacional

7 SPINTEC - SPINtronique et TEchnologie des Composants

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.

Document type :

Journal articles

Domain :

Physics [physics]

Complete list of metadatas

Cited literature [56 references] Display Hide Download

https://hal-cea.archives-ouvertes.fr/cea-01497897
Contributor : Dominique Girard <>
Submitted on : Wednesday, March 29, 2017 - 2:33:10 PM
Last modification on : Thursday, April 4, 2019 - 9:44:02 AM

srep17039.pdf

Publisher files allowed on an open archive

Efficient synchronization of dipolarly coupled vortex-based spin transfer nano-oscillators

File

Identifiers

Collections

Citation

Export

Metrics

417

122

Contact

Efficient synchronization of dipolarly coupled vortex-based spin transfer nano-oscillators

File

Identifiers

Collections

Citation

Export

Share

Metrics

417

122

Contact