Collective spin waves in a bicomponent two-dimensional Magnonic Crystal
| Autor: | G. Gubbiotti(1, S. Tacchi(1, M. Madami(1), G. Carlotti(1), S. Jain(3), A .O. Adeyeye(3), M.P. Kostylev(4) |
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| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) Magnetic moment Condensed matter physics Magnon 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Light scattering Crystal Brillouin zone Condensed Matter::Materials Science Spin wave 0103 physical sciences Band diagram Nanodot 010306 general physics 0210 nano-technology |
| Zdroj: | Applied physics letters 100 (2012): 162407. info:cnr-pdr/source/autori:G. Gubbiotti(1,2), S. Tacchi(1,2), M. Madami(1), G. Carlotti(1), S. Jain(3), A .O. Adeyeye(3), M.P. Kostylev(4)/titolo:Collective spin waves in a bicomponent two-dimensional Magnonic Crystal/doi:/rivista:Applied physics letters/anno:2012/pagina_da:162407/pagina_a:/intervallo_pagine:162407/volume:100 Applied Physics Letters |
| Popis: | Spin waves propagating in a bicomponent magnonic crystal consisting of a two-dimensional array of alternated NiFe and Co nanodots have been investigated. The frequency dispersion of collective modes, measured by Brillouin light scattering, is compared with the band diagram obtained by numerically solving the eigenvalue problem derived from the linearized Landau-Lifshitz magnetic torque equation. It is shown that the modes which are active in Brillouin experiment are characterized by the simplest modal profiles within the NiFe dots. For such excitations, the Co dots act as mediators of dipole coupling between the NiFe dots. |
| Databáze: | OpenAIRE |
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