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Excitation modes of vortices in submicron magnetic disks

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Classical and quantum theory of spin waves in the vortex state of a mesoscopic submicron magnetic disk have been developed with account of the finite mass density of the vortex. Oscillations of the vortex core resemble oscillations of a charged string in a potential well in the presence of the magnetic field. A conventional gyrotropic frequency appears as a gap in the spectrum of spin waves of the vortex. The mass of the vortex has been computed, and the result agrees with experimental findings. The finite vortex mass generates a high-frequency branch of spin waves. The effects of an external magnetic field and dissipation have been addressed.

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ZARZUELA FERNÁNDEZ, Ricardo, CHUDNOVSKY, Eugene m., TEJADA PALACIOS, Javier. Excitation modes of vortices in submicron magnetic disks. _Physical Review B_. 2013. Vol. 87, núm. 1, pàgs. 014413-1 -014413-11. [consulta: 22 de gener de 2026]. ISSN: 1098-0121. [Disponible a: https://hdl.handle.net/2445/51764]

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