Excitation modes of vortices in submicron magnetic disks


Autoria(s): Zarzuela Fernández, Ricardo; Chudnovsky, Eugene M., 1948-; Tejada Palacios, Javier
Contribuinte(s)

Universitat de Barcelona

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

http://hdl.handle.net/2445/51764

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