Neudecker, I. and Klaui, M. and Perzlmaier, K. and Backes, D. and Heyderman, L. J. and Vaz, C. A. F. and Bland, J. A. C. and Ruediger, U. and Back, Christian H. (2006) Spatially resolved dynamic eigenmode spectrum of Co rings. PHYSICAL REVIEW LETTERS, 96 (5): 057207. ISSN 0031-9007,
Full text not available from this repository.Abstract
The spatially resolved eigenmode spectrum of micrometer-sized Co ring elements has been determined by means of combined vector network analyzer ferromagnetic resonance and time resolved magneto-optic Kerr effect measurements. Up to 5 resonant eigenmodes were observed in the frequency range from 45 MHz to 20 GHz as a function of an external magnetic bias field. A well-defined mode structure was found for the two equilibrium states (vortex and onion) which correspond to distinctive spatial modes. The effect of dynamic inter-ring coupling on the modes in the remanent states was evinced. The experimental results are found to be in good agreement with those of micromagnetic simulations. Our results demonstrate that, in analogy to the well-defined static equilibrium magnetic states of ring elements, the eigenmode spectra of this high symmetry geometry consist of a well-defined and simple mode structure.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MAGNETOSTATIC MODES; FERROMAGNETIC RINGS; STATE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Feb 2021 12:02 |
| Last Modified: | 23 Feb 2021 12:02 |
| URI: | https://pred.uni-regensburg.de/id/eprint/34945 |
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