Phase locking of spin-torque oscillators by spin-wave interactions

Xi Chen, R. H. Victora

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

The spin-wave mediated interaction leading to the phase locking of two spin-torque oscillators is studied. The effective coupling parameter is derived and unexpectedly found to exhibit an oscillatory behavior as a function of intercontact distance. The period of the oscillation is shown to equal the wavelength of the spin wave radiated from the contact. As a result, the oscillators will alternate between in-phase and out-of-phase oscillations, corresponding to maximal and minimal output powers. The predictions are confirmed by micromagnetic simulation.

Original languageEnglish (US)
Article number180402
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number18
DOIs
StatePublished - May 1 2009

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