Excitation modes of vortices in submicron magnetic disks
Contribuinte(s) |
Universitat de Barcelona |
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Resumo |
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. |
Identificador | |
Idioma(s) |
eng |
Publicador |
American Physical Society |
Direitos |
(c) American Physical Society, 2013 info:eu-repo/semantics/openAccess |
Palavras-Chave | #Superconductivitat #Propietats magnètiques #Ferromagnetisme #Spin (Física nuclear) #Teoria quàntica #Excitació nuclear #Superconductivity #Magnetic properties #Ferromagnetism #Nuclear spin #Quantum theory #Nuclear excitation |
Tipo |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |