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dc.contributor.authorDeymier, P. A.
dc.contributor.authorVasseur, J. O.
dc.contributor.authorRunge, K.
dc.contributor.authorManchon, Aurelien
dc.contributor.authorBou-Matar, O.
dc.date.accessioned2015-03-17T06:11:20Z
dc.date.available2015-03-17T06:11:20Z
dc.date.issued2014-12-23
dc.identifier.citationPhonon-magnon resonant processes with relevance to acoustic spin pumping 2014, 90 (22) Physical Review B
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.doi10.1103/PhysRevB.90.224421
dc.identifier.urihttp://hdl.handle.net/10754/346753
dc.description.abstractThe recently described phenomenon of resonant acoustic spin pumping is due to resonant coupling between an incident elastic wave and spin waves in a ferromagnetic medium. A classical one-dimensional discrete model of a ferromagnet with two forms of magnetoelastic coupling is treated to shed light on the conditions for resonance between phonons and magnons. Nonlinear phonon-magnon interactions in the case of a coupling restricted to diagonal terms in the components of the spin degrees of freedom are analyzed within the framework of the multiple timescale perturbation theory. In that case, one-phonon-two-magnon resonances are the dominant mechanism for pumping. The effect of coupling on the dispersion relations depends on the square of the amplitude of the phonon and magnon excitations. A straightforward analysis of a linear phonon-magnon interaction in the case of a magnetoelastic coupling restricted to off-diagonal terms in the components of the spins shows a one-phonon to one-magnon resonance as the pumping mechanism. The resonant dispersion relations are independent of the amplitude of the waves. In both cases, when an elastic wave with a fixed frequency is used to stimulate magnons, application of an external magnetic field can be used to approach resonant conditions. Both resonance conditions exhibit the same type of dependency on the strength of an applied magnetic field.
dc.publisherAmerican Physical Society (APS)
dc.relation.urlhttp://link.aps.org/doi/10.1103/PhysRevB.90.224421
dc.rightsArchived with thanks to Physical Review B
dc.titlePhonon-magnon resonant processes with relevance to acoustic spin pumping
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentSpintronics Theory Group
dc.identifier.journalPhysical Review B
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85721, USA
dc.contributor.institutionInstitut d’Electronique, de Micro-électronique et de Nanotechnologie, UMR CNRS 8520, Cité Scientifique, 59652 Villeneuve d’Ascq Cedex, France
dc.contributor.institutionInternational Associated Laboratory LEMAC/LICS: IEMN, UMR CNRS 8520, PRES Lille Nord de France, Ecole Centrale Lille, 59652 Villeneuve d’Ascq, France
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personManchon, Aurelien
refterms.dateFOA2018-06-13T16:18:37Z


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