A theoretical model for the calculation of the quantized spectrum of spin modes frequencies in cylindrical magnetic dots of radius ranging from the nanometric to the micrometric scale in the vortex ground state is presented [1,2]. We take into account the core energy showing its effect on the spin dynamics. The spin mode eigenfrequencies are calculated in the diagonal approximation. The spin mode eigenfrequencies are calculated in the diagonal approximation by means of the exact calculation of the dipolar field [2]. [1] R. Zivieri and F. Nizzoli, “ Theory of spin modes in vortex-state ferromagnetic cylindrical dots”, Phys. Rev. B, 71, 014411- 1-5 (2005); R. Zivieri and F. Nizzoli, Phys. Rev. B, 75, 1(E) (2006) [2] R. Zivieri, “Dipolar fields in vortex-state spin dynamics”, in preparation -- Presentazione orale by R. Zivieri - Conferenza internazionale
Theory of spin modes in the vortex state -- Presentazione orale by R. Zivieri - Conferenza internazionale
ZIVIERI, Roberto;NIZZOLI, Fabrizio
2007
Abstract
A theoretical model for the calculation of the quantized spectrum of spin modes frequencies in cylindrical magnetic dots of radius ranging from the nanometric to the micrometric scale in the vortex ground state is presented [1,2]. We take into account the core energy showing its effect on the spin dynamics. The spin mode eigenfrequencies are calculated in the diagonal approximation. The spin mode eigenfrequencies are calculated in the diagonal approximation by means of the exact calculation of the dipolar field [2]. [1] R. Zivieri and F. Nizzoli, “ Theory of spin modes in vortex-state ferromagnetic cylindrical dots”, Phys. Rev. B, 71, 014411- 1-5 (2005); R. Zivieri and F. Nizzoli, Phys. Rev. B, 75, 1(E) (2006) [2] R. Zivieri, “Dipolar fields in vortex-state spin dynamics”, in preparation -- Presentazione orale by R. Zivieri - Conferenza internazionaleI documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
