Journal
PHYSICAL REVIEW B
Volume 81, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.81.014414
Keywords
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Funding
- Basque Science Foundation
- JAEdoc of the CSIC (Spain)
- SAIOTEK [S-PC09UN03]
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We introduce a topological gauge vector potential which influences spin-wave excitations over arbitrary nonuniform, slowly moving magnetization background. The time component of the gauge potential plays a principal role in the magnetization dynamics of typical magnetic nanostructures. As an example, we consider spin modes excited in the vortex-state magnetic dots. The vortex-spin-wave interaction is described as a consequence of the gauge field arising due to the moving vortex magnetization. The approach yields a giant frequency splitting of the spin waves having nonzero overlapping with the vortex background mode as well as a finite vortex mass of dynamical origin.
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