Phase locking and frequency doubling in spin-transfer-torque oscillators with two coupled free layers

Abstract

We report measurements of spin-torque-driven oscillations in magnetic multilayer devices containing two in-plane-oriented free layers designed to have significant coupling between them. They are driven to oscillate by spin-transfertorquefromtwoperpendicularlyorientedpolarizers.Forbothmeasureddevicesandmicromagnetic simulations,wefindthattheoscillationsinthetwofreelayersarephaselocked,resultinginafrequencydoubling and large output signals. The simulations suggest that the oscillations are due to spatially nonuniform dynamics characterized by coupled large-amplitude motion of the two free layers.


Autore Pugliese

Tutti gli autori

  • Moriyama T , Finocchio G , Carpentieri M , Azzerboni B , Ralph DC , Buhrman RA

Titolo volume/Rivista

PHYSICAL REVIEW. B, RAPID COMMUNICATIONS


Anno di pubblicazione

2012

ISSN

1082-586X

ISBN

Non Disponibile


Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile


Numero di citazioni Scopus

28

Ultimo Aggiornamento Citazioni

2017-04-22 03:20:59


Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile