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Title: Synchronization of spin torque nano-oscillators through dipolar interactions

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.
Authors:
; ;  [1] ;  [2] ; ;  [3]
  1. Department of Physics, National Changhua University of Education, Changhua 500, Taiwan (China)
  2. Graduate School of Materials Science, National Yunlin University of Science and Technology, Douliou, 64002, Taiwan (China)
  3. Department of Physics and Center for Quantum Sciences and Engineering, National Taiwan University, Taipei 10617, Taiwan (China)
Publication Date:
OSTI Identifier:
22273704
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; ANISOTROPY; DIFFERENTIAL EQUATIONS; LAYERS; MAGNETIC DIPOLES; MAGNETISM; MICROWAVE RADIATION; NANOSTRUCTURES; OSCILLATORS; POLARIZATION; SPIN; SYNCHRONIZATION; TORQUE