Synchronization of spin torque nano-oscillators through dipolar interactions
Journal
Journal of Applied Physics
Journal Volume
115
Journal Issue
13
Pages
134306
Date Issued
2014
Author(s)
Abstract
In an array of spin-torque nano-oscillators (STNOs) that combine a perpendicular polarized fixed layer with strong in-plane anisotropy in the free layers, magnetic dipolar interactions can effectively phase-lock the array, thus further enhancing the power of the output microwave signals. We perform a qualitative analysis of the synchronization of an array based on the Landau-Lifshitz-Gilbert equation, with a spin-transfer torque that assumes strong in-plane anisotropy. Finally, we present the numerical results for four coupled STNOs to provide further evidence for the proposed theory.
SDGs
Type
journal article