Synchronization of spin torque nano-oscillators through dipolar interactions
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.
- Authors:
-
- Department of Physics, National Changhua University of Education, Changhua 500, Taiwan (China)
- Graduate School of Materials Science, National Yunlin University of Science and Technology, Douliou, 64002, Taiwan (China)
- 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
- Journal Name:
- Journal of Applied Physics
- Additional Journal Information:
- Journal Volume: 115; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
- 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
Citation Formats
Chen, Hao-Hsuan, Wu, Jong-Ching, Horng, Lance, Lee, Ching-Ming, Chang, Ching-Ray, and Chang, Jui-Hang. Synchronization of spin torque nano-oscillators through dipolar interactions. United States: N. p., 2014.
Web. doi:10.1063/1.4869203.
Chen, Hao-Hsuan, Wu, Jong-Ching, Horng, Lance, Lee, Ching-Ming, Chang, Ching-Ray, & Chang, Jui-Hang. Synchronization of spin torque nano-oscillators through dipolar interactions. United States. https://doi.org/10.1063/1.4869203
Chen, Hao-Hsuan, Wu, Jong-Ching, Horng, Lance, Lee, Ching-Ming, Chang, Ching-Ray, and Chang, Jui-Hang. 2014.
"Synchronization of spin torque nano-oscillators through dipolar interactions". United States. https://doi.org/10.1063/1.4869203.
@article{osti_22273704,
title = {Synchronization of spin torque nano-oscillators through dipolar interactions},
author = {Chen, Hao-Hsuan and Wu, Jong-Ching and Horng, Lance and Lee, Ching-Ming and Chang, Ching-Ray and Chang, Jui-Hang},
abstractNote = {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.},
doi = {10.1063/1.4869203},
url = {https://www.osti.gov/biblio/22273704},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 13,
volume = 115,
place = {United States},
year = {Mon Apr 07 00:00:00 EDT 2014},
month = {Mon Apr 07 00:00:00 EDT 2014}
}
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