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Author Gubbiotti, G. ♦ Tacchi, S. ♦ Montoncello, F. ♦ Giovannini, L. ♦ Madami, M. ♦ Carlotti, G. ♦ Ding, J. ♦ Adeyeye, A. O.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ♦ DIFFRACTION GRATINGS ♦ ELECTRONIC STRUCTURE ♦ EMISSION ♦ EQUIPMENT ♦ FORECASTING ♦ LATTICE PARAMETERS ♦ LIGHT SCATTERING ♦ MAGNETIC FIELDS ♦ ORIENTATION ♦ PERMALLOY ♦ SPIN WAVES
Abstract The Brillouin light scattering technique has been exploited to study the angle-resolved spin wave band diagrams of squared Permalloy antidot lattice. Frequency dispersion of spin waves has been measured for a set of fixed wave vector magnitudes, while varying the wave vector in-plane orientation with respect to the applied magnetic field. The magnonic band gap between the two most dispersive modes exhibits a minimum value at an angular position, which exclusively depends on the product between the selected wave vector magnitude and the lattice constant of the array. The experimental data are in very good agreement with predictions obtained by dynamical matrix method calculations. The presented results are relevant for magnonic devices where the antidot lattice, acting as a diffraction grating, is exploited to achieve multidirectional spin wave emission.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-06-29
Publisher Place United States
Journal Applied Physics Letters
Volume Number 106
Issue Number 26


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