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Article: Macrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillators

TitleMacrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillators
Authors
Issue Date2012
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal Of Applied Physics, 2012, v. 112 n. 6, article no. 063903 How to Cite?
AbstractUsing nonlinear dynamical systems theory, we analytically studied a spin-torque device in which the magnetization of the polarizer (the fixed layer) is tilted at an arbitrary angle out of the thin-film plane. While the analytical theory can determine the major features of the system, macrospin simulations were employed to demonstrate the unique characteristics of the system, such as the hysteretic switching between bistable states. Material dependencies of the dynamic and static state diagrams were also studied in the framework of the macrospin model. Full-scale micromagnetics simulations were finally performed to reveal more subtle features of the dynamics of such tilted polarizer systems. Both the macrospin and micromagnetics simulations gave quantitatively the same results as our analytical theory. © 2012 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/159785
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhou, Yen_HK
dc.contributor.authorZhang, Hen_HK
dc.contributor.authorLiu, Yen_HK
dc.contributor.authorÅkerman, Jen_HK
dc.date.accessioned2012-08-16T05:56:37Z-
dc.date.available2012-08-16T05:56:37Z-
dc.date.issued2012en_HK
dc.identifier.citationJournal Of Applied Physics, 2012, v. 112 n. 6, article no. 063903en_HK
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/159785-
dc.description.abstractUsing nonlinear dynamical systems theory, we analytically studied a spin-torque device in which the magnetization of the polarizer (the fixed layer) is tilted at an arbitrary angle out of the thin-film plane. While the analytical theory can determine the major features of the system, macrospin simulations were employed to demonstrate the unique characteristics of the system, such as the hysteretic switching between bistable states. Material dependencies of the dynamic and static state diagrams were also studied in the framework of the macrospin model. Full-scale micromagnetics simulations were finally performed to reveal more subtle features of the dynamics of such tilted polarizer systems. Both the macrospin and micromagnetics simulations gave quantitatively the same results as our analytical theory. © 2012 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.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleMacrospin and micromagnetic studies of tilted polarizer spin-torque nano-oscillatorsen_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.doi10.1063/1.4752265en_HK
dc.identifier.scopuseid_2-s2.0-84867063303en_HK
dc.identifier.hkuros202149en_US
dc.identifier.hkuros217180-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84867063303&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume112en_HK
dc.identifier.issue6en_HK
dc.identifier.isiWOS:000309423200075-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhou, Y=51360911500en_HK
dc.identifier.scopusauthoridZhang, H=26022193200en_HK
dc.identifier.scopusauthoridLiu, Y=9242948500en_HK
dc.identifier.scopusauthoridÅkerman, J=7003585708en_HK

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