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Conference Paper: Phase-locked spin torque oscillators: Impact of device variability and time delay

TitlePhase-locked spin torque oscillators: Impact of device variability and time delay
Authors
Issue Date2007
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal Of Applied Physics, 2007, v. 101 n. 9 How to Cite?
AbstractWe have carried out detailed Landau-Lifshitz-Gilbert simulations of pairs of serially connected spin torque oscillators (STOs) in parallel with a resistive load. To study the impact of realistic process variations on STO synchronization we let the two STOs have different in-plane anisotropy fields (Hk). The simulation also provides for a time delay (τ). We construct a phase diagram of the STO synchronization as a function of Hk and direct current (Idc) at different τ. The phase diagram turns out to be quite rich with different types of synchronized precession modes. While the synchronized state is originally very sensitive to STO process variations and can only sustain up to 4% Hk variation, the addition of a small time delay dramatically improves its robustness and allows as much as 145% Hk variation in the entire out-of-plane precession regime. © 2007 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/160469
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPersson, Jen_HK
dc.contributor.authorZhou, Yen_HK
dc.contributor.authorAkerman, Jen_HK
dc.date.accessioned2012-08-16T06:11:58Z-
dc.date.available2012-08-16T06:11:58Z-
dc.date.issued2007en_HK
dc.identifier.citationJournal Of Applied Physics, 2007, v. 101 n. 9en_US
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/160469-
dc.description.abstractWe have carried out detailed Landau-Lifshitz-Gilbert simulations of pairs of serially connected spin torque oscillators (STOs) in parallel with a resistive load. To study the impact of realistic process variations on STO synchronization we let the two STOs have different in-plane anisotropy fields (Hk). The simulation also provides for a time delay (τ). We construct a phase diagram of the STO synchronization as a function of Hk and direct current (Idc) at different τ. The phase diagram turns out to be quite rich with different types of synchronized precession modes. While the synchronized state is originally very sensitive to STO process variations and can only sustain up to 4% Hk variation, the addition of a small time delay dramatically improves its robustness and allows as much as 145% Hk variation in the entire out-of-plane precession regime. © 2007 American Institute of Physics.en_HK
dc.languageengen_US
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_HK
dc.relation.ispartofJournal of Applied Physicsen_HK
dc.titlePhase-locked spin torque oscillators: Impact of device variability and time delayen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailZhou, Y: yanzhou@hku.hken_HK
dc.identifier.authorityZhou, Y=rp01541en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1063/1.2670045en_HK
dc.identifier.scopuseid_2-s2.0-34248585293en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34248585293&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume101en_HK
dc.identifier.issue9en_HK
dc.identifier.isiWOS:000246567900114-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridPersson, J=25031767000en_HK
dc.identifier.scopusauthoridZhou, Y=51360911500en_HK
dc.identifier.scopusauthoridAkerman, J=7003585708en_HK

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