Spin wave quantization and dynamic coupling in micron-size circular magnetic dots

  • We report on the observation of spin wave quantization in square arrays of micron size circular magnetic Ni80Fe20 dots by means of Brillouin light scattering spectroscopy. For a large wavevector interval several discrete, dispersionless modes with a frequency splitting of up to 2.5 GHz were observed. The modes are identified as magnetostatic surface spin waves laterally quantized due to in- plane confinement in each single dot. The frequencies of the lowest observed modes decrease with increasing distance between the dots, thus indicating an essential dynamic magnetic dipole interaction between the dots with small interdot distances.

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Metadaten
Author:Burkard Hillebrands
URN (permanent link):urn:nbn:de:hbz:386-kluedo-8789
Document Type:Preprint
Language of publication:English
Year of Completion:1999
Year of Publication:1999
Publishing Institute:Technische Universität Kaiserslautern
Tag:Brillouin light scattering spectroscopy ; magnetostatic surface spin waves; spin wave quantization
Faculties / Organisational entities:Fachbereich Physik
DDC-Cassification:530 Physik

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