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

Research output: Contribution to journalArticle

12 Citations (Scopus)

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

Fingerprint

torque
synchronism
oscillators
anisotropy
qualitative analysis
interactions
microwaves
output

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Chen, Hao Hsuan ; Lee, Ching Ming ; Wu, Jong-Ching ; Horng, Lance ; Chang, Ching Ray ; Chang, Jui Hang. / Synchronization of spin torque nano-oscillators through dipolar interactions. In: Journal of Applied Physics. 2014 ; Vol. 115, No. 13.
@article{0d2078f74dc24dd79fb2eb141fb2dde1,
title = "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.",
author = "Chen, {Hao Hsuan} and Lee, {Ching Ming} and Jong-Ching Wu and Lance Horng and Chang, {Ching Ray} and Chang, {Jui Hang}",
year = "2014",
month = "4",
day = "7",
doi = "10.1063/1.4869203",
language = "English",
volume = "115",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "13",

}

Synchronization of spin torque nano-oscillators through dipolar interactions. / Chen, Hao Hsuan; Lee, Ching Ming; Wu, Jong-Ching; Horng, Lance; Chang, Ching Ray; Chang, Jui Hang.

In: Journal of Applied Physics, Vol. 115, No. 13, 134306, 07.04.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synchronization of spin torque nano-oscillators through dipolar interactions

AU - Chen, Hao Hsuan

AU - Lee, Ching Ming

AU - Wu, Jong-Ching

AU - Horng, Lance

AU - Chang, Ching Ray

AU - Chang, Jui Hang

PY - 2014/4/7

Y1 - 2014/4/7

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84898034860&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84898034860&partnerID=8YFLogxK

U2 - 10.1063/1.4869203

DO - 10.1063/1.4869203

M3 - Article

AN - SCOPUS:84898034860

VL - 115

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

IS - 13

M1 - 134306

ER -