Title:
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Excitation modes of vortices in submicron magnetic disks
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Author:
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Zarzuela Fernández, Ricardo; Chudnovsky, Eugene M., 1948-; Tejada Palacios, Javier
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Other authors:
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Universitat de Barcelona |
Abstract:
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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. |
Subject(s):
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-Superconductivitat -Propietats magnètiques -Ferromagnetisme -Spin (Física nuclear) -Teoria quàntica -Excitació nuclear -Superconductivity -Magnetic properties -Ferromagnetism -Nuclear spin -Quantum theory -Nuclear excitation |
Rights:
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(c) American Physical Society, 2013
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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