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Spin-wave localization between nearest and next-nearest neighboring holes in an antidot lattice
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10.1063/1.2988290
/content/aip/journal/apl/93/12/10.1063/1.2988290
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/12/10.1063/1.2988290
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

[(a), (c), (e), and (g)] Experimental and [(b), (d), (f), and (h)] corresponding simulated field dispersions of spin-wave excitations in a permalloy antidot lattice ( and ). [(a) and (b)] . [(c) and (d)] . [(e) and (f)] . [(g) and (h)] at . Dark reflects high absorption. Resonance positions are highlighted by open circles. Triangles correlate mode profiles of Figs. 2 and 3 to the field dispersions.

Image of FIG. 2.
FIG. 2.

Spin precession amplitudes at . To illustrate the symmetry of eigenmodes with respect to the lattice of holes (hatched white), four unit cells are depicted. The bright part (red online) reflects a high spin precession amplitude, the dark part (blue online) means zero amplitude. The orientation of is indicated by the arrow. We find different types of modes: (a) extended and (b) localized mode between nearest neighboring holes at . (c) At , is not large enough to generate a mode that extends straight through the lattice . (d) Mode at localized in the central region between next-nearest neighboring holes. Triangles correlate the mode profiles with positions in Fig. 1.

Image of FIG. 3.
FIG. 3.

Spin precession amplitudes at and . (a) Mode localized between nearest neighbors . (b) Mode localized between next-nearest neighbors . Triangles correlate the mode profiles with positions in Fig. 1.

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/content/aip/journal/apl/93/12/10.1063/1.2988290
2008-09-22
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Spin-wave localization between nearest and next-nearest neighboring holes in an antidot lattice
http://aip.metastore.ingenta.com/content/aip/journal/apl/93/12/10.1063/1.2988290
10.1063/1.2988290
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