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Oscillatory transient regime in the forced dynamics of a nonlinear auto oscillator
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
KTH, School of Information and Communication Technology (ICT), Microelectronics and Applied Physics, MAP.
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2010 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 82, no 1, 012408- p.Article in journal (Refereed) Published
Abstract [en]

We demonstrate that the forced transient dynamics of a nonlinear (nonisochronous) auto-oscillator is qualitatively different from the dynamics of a quasilinear oscillator described by the classical Adler's model. If the normalized amplitude mu of the driving force exceeds a certain critical value mu(cr), the transition to the synchronized regime becomes oscillatory with a frequency proportional to proportional to root mu-mu(cr) and a synchronization time that is almost independent of mu. The discovered effect is illustrated on the example of a strongly nonlinear spin torque nano-oscillator (STNO) where the finite transient synchronization time can limit the possible range of STNO modulation frequencies.

Place, publisher, year, edition, pages
2010. Vol. 82, no 1, 012408- p.
Keyword [en]
MAGNETIZATION REVERSAL
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-29433DOI: 10.1103/PhysRevB.82.012408ISI: 000280207800001Scopus ID: 2-s2.0-77956511564OAI: oai:DiVA.org:kth-29433DiVA: diva2:397554
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note
QC 20110215Available from: 2011-02-15 Created: 2011-02-02 Last updated: 2017-12-11Bibliographically approved

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