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2013-01-09

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/51764

Excitation modes of vortices in submicron magnetic disks

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http://dx.doi.org/10.1103/PhysRevB.87.014413

Abstract

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.

Subject

Superconductivitat, Propietats magnètiques, Ferromagnetisme, Spin (Física nuclear), Teoria quàntica, Excitació nuclear

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Superconductivity, Magnetic properties, Ferromagnetism, Nuclear spin, Quantum theory, Nuclear excitation

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

ZARZUELA FERNÁNDEZ, Ricardo, CHUDNOVSKY, Eugene M. and TEJADA PALACIOS, Javier. Excitation modes of vortices in submicron magnetic disks. Physical Review B. 2013. Vol. 87, num. 1, pags. 014413-1 -014413-11. ISSN 1098-0121. [consulted: 18 of June of 2026]. Available at: https://hdl.handle.net/2445/51764

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