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Article: Multiple synchronization attractors of serially connected spin-torque nanooscillators

TitleMultiple synchronization attractors of serially connected spin-torque nanooscillators
Authors
Issue Date2012
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2012, v. 86 n. 1, article no. 014418 How to Cite?
Abstract
Spin-torque nanooscillators (STNOs), which have both the common properties of nanosized oscillators (small size, tunable operating frequency) and some particular ones (wide operating range, easy on-chip integration, etc.), have received a great deal of attention due to their high potential in applications. Yet synchronization of serially connected STNOs has been considered essential for applications. In this paper, we present findings concerning the following properties of synchronized serially connected STNOs: (i) multiple synchronization attractors coexist, and the attracting basins are entangled in a complicated manner; (ii) these attractors have different synchronized frequencies and output powers; and (iii) switching among these attractors can be induced by a small noise, which causes a resonance peak in the power spectra to vanish. These characteristics can be understood using saddle-node bifurcations and have direct impact on laboratory experiments and the potential applications of STNO-based devices. © 2012 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/159802
ISSN
2013 Impact Factor: 3.664
2013 SCImago Journal Rankings: 2.143
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLi, Den_HK
dc.contributor.authorZhou, Yen_HK
dc.contributor.authorHu, Ben_HK
dc.contributor.authorÅkerman, Jen_HK
dc.contributor.authorZhou, Cen_HK
dc.date.accessioned2012-08-16T05:56:45Z-
dc.date.available2012-08-16T05:56:45Z-
dc.date.issued2012en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2012, v. 86 n. 1, article no. 014418en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/159802-
dc.description.abstractSpin-torque nanooscillators (STNOs), which have both the common properties of nanosized oscillators (small size, tunable operating frequency) and some particular ones (wide operating range, easy on-chip integration, etc.), have received a great deal of attention due to their high potential in applications. Yet synchronization of serially connected STNOs has been considered essential for applications. In this paper, we present findings concerning the following properties of synchronized serially connected STNOs: (i) multiple synchronization attractors coexist, and the attracting basins are entangled in a complicated manner; (ii) these attractors have different synchronized frequencies and output powers; and (iii) switching among these attractors can be induced by a small noise, which causes a resonance peak in the power spectra to vanish. These characteristics can be understood using saddle-node bifurcations and have direct impact on laboratory experiments and the potential applications of STNO-based devices. © 2012 American Physical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B - Condensed Matter and Materials Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleMultiple synchronization attractors of serially connected spin-torque nanooscillatorsen_HK
dc.typeArticleen_HK
dc.identifier.emailZhou, Y: yanzhou@hku.hken_HK
dc.identifier.authorityZhou, Y=rp01541en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevB.86.014418en_HK
dc.identifier.scopuseid_2-s2.0-84864491944en_HK
dc.identifier.hkuros202148-
dc.identifier.hkuros211027-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84864491944&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume86en_HK
dc.identifier.issue1, article no. 014418en_HK
dc.identifier.isiWOS:000306507600002-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, D=36612035300en_HK
dc.identifier.scopusauthoridZhou, Y=51360911500en_HK
dc.identifier.scopusauthoridHu, B=55324890300en_HK
dc.identifier.scopusauthoridÅkerman, J=7003585708en_HK
dc.identifier.scopusauthoridZhou, C=7403347050en_HK

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