Synchronization of spin torque nano-oscillators through dipolar interactions

Hao Hsuan Chen, Ching Ming Lee, Jong-Ching Wu, Lance Horng, Ching Ray Chang, Jui Hang Chang

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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.

Original languageEnglish
Article number134306
JournalJournal of Applied Physics
Volume115
Issue number13
DOIs
Publication statusPublished - 2014 Apr 7

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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