We report a study of the dispersion of spin waves in a hexagonal array of interacting ferromagnetic nanodisks for two orthogonal orientations of the in-plane applied magnetic field, i.e., either parallel or perpendicular to the direction of first neighbour disks. The experimental data were modelled using the dynamical matrix method, and the results were interpreted in terms of the effective wave vector model. We have found that spin waves propagating in the two orthogonal directions exhibit marked asymmetry concerning the existence of maxima/minima in their dispersion curves and the sign of their group velocities.

Asymmetry of spin wave dispersions in a hexagonal magnonic crystal

MONTONCELLO, Federico
Primo
;
GIOVANNINI, Loris;
2013

Abstract

We report a study of the dispersion of spin waves in a hexagonal array of interacting ferromagnetic nanodisks for two orthogonal orientations of the in-plane applied magnetic field, i.e., either parallel or perpendicular to the direction of first neighbour disks. The experimental data were modelled using the dynamical matrix method, and the results were interpreted in terms of the effective wave vector model. We have found that spin waves propagating in the two orthogonal directions exhibit marked asymmetry concerning the existence of maxima/minima in their dispersion curves and the sign of their group velocities.
2013
Montoncello, Federico; S., Tacchi; Giovannini, Loris; M., Madami; G., Gubbiotti; G., Carlotti; E., Sirotkin; E., Ahmad; F. Y., Ogrin; V. V., Kruglyak...espandi
File in questo prodotto:
File Dimensione Formato  
Asymmetry of spin wave dispersions in a hexagonal magnonic crystal.pdf

solo gestori archivio

Descrizione: versione editoriale
Tipologia: Full text (versione editoriale)
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 1.63 MB
Formato Adobe PDF
1.63 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Asymmetry of spin wave dispersions in a hexagonal magnonic crystal_ORE.pdf

accesso aperto

Descrizione: versione post print
Tipologia: Post-print
Licenza: PUBBLICO - Pubblico con Copyright
Dimensione 1.74 MB
Formato Adobe PDF
1.74 MB Adobe PDF Visualizza/Apri

I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1803507
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 27
  • ???jsp.display-item.citation.isi??? 28
social impact