Spatially Resolved Dynamics of Localized Spin-Wave Modes in Ferromagnetic Wires
| Autor: | Paul A. Crowell, D. M. Engebretson, Jesse Berezovsky, J. P. Park, P. Eames |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: |
Condensed Matter - Materials Science
Materials science Field (physics) Condensed matter physics Plane (geometry) Single-mode optical fiber General Physics and Astronomy Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Edge (geometry) Spectral line Condensed Matter::Materials Science Ferromagnetism Spin wave Perpendicular |
| Popis: | We have observed localized spin-wave modes in individual thin-film ferromagnetic wires using time-resolved Kerr microscopy as a micron-scale spectroscopic probe. The localization is due to the partial demagnetization of a wire when an external field is applied in the plane of the film and perpendicular to the long axis of the wire. Spatially-resolved spectra demonstrate the existence of distinct modes at the edges of a rectangular wire. Spectral images clearly show the crossover of the two edge modes into a single mode in low applied fields, in agreement with the results of micromagnetic simulations. 10 pages, 4 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|