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Volume 32, Issue 12, December 2006
- LOW-TEMPERATURE MAGNETISM
32(2006); http://dx.doi.org/10.1063/1.2400688View Description Hide Description
The magnon mode excitation spectrum is calculated using the linearized Landau–Lifshitz equations applied to the ring in the vortex ground state. A combination of analytical techniques with numerical evaluation of integrals is used to obtain the mode frequency, with the effective magnetostatic volume charge as a small perturbation. In general, the modes can be classified according to radial number and azimuthal number . It is shown that the frequency increases as increases, and the frequency decreases as increases.