Broadband probing magnetization dynamics of the coupled vortex state permalloy layers in nanopillars
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
American Institute of PhysicsDate
2012-06-25Citation
10.1063/1.4729825
Applied Physics Letters 100.26 (2012): 262406
ISSN
0003-6951 (print); 1077-3118 (online)DOI
10.1063/1.4729825Funded by
Authors acknowledge support from Spanish MINECO (MAT2009-10139; CSD2007-00010), CM (P2009/MAT-1726) and CCC-UAM (SVORTEX). K.G. acknowledges support by IKERBASQUE and partial support by MEC Grants PIB2010US-00153 and FIS2010-20979-C02-01.Project
Comunidad de Madrid. S2009/MAT-1726/NANOBIOMAGNETEditor's Version
http://dx.doi.org/10.1063/1.4729825Subjects
Nanostructures; Spin waves; Chiral symmetries; Rotating flows; Magnetic fields; FísicaNote
The following article appeared in Applied Physics Letters 100.26 (2012): 262406 and may be found at http://scitation.aip.org/content/aip/journal/apl/100/26/10.1063/1.4729825Rights
© 2012 American Institute of PhysicsAbstract
Broadband magnetization response of coupled vortex state magnetic dots in layered nanopillars was explored as a function of in-plane magnetic field and interlayer separation. For dipolarly coupled circular Py(25 nm)/Cu(20 nm)/Py(25 nm) nanopillars of 600 nm diameter, a small in-plane field splits the eigenfrequencies of azimuthal spin wave modes inducing an abrupt transition between in-phase and out-of-phase kinds of the low-lying coupled spin wave modes. The critical field for this splitting is determined by antiparallel chiralities of the vortices in the layers. Qualitatively similar (although more gradual) changes occur also in the exchange coupled Py(25 nm)/Cu(1 nm)/Py(25 nm) tri-layer nanopillars. These findings are in qualitative agreement with micromagnetic dynamic simulations.
Files in this item
Google Scholar:Awad, A.A.
-
Lara, A.
-
Metlushko, Vitali V.
-
Guslienko, Konstantin Yu
-
Aliev Kazanski, Farkhad
This item appears in the following Collection(s)
Related items
Showing items related by title, author, creator and subject.