Vortices and chirality of magnetostatic modes in quasi-2D ferrite disk particles

Abstract

In this paper we show that the vortex states can be created not only in magnetically soft "small" (with the dipolar and exchange energy competition) cylindrical dots, but also in magnetically saturated "big" (when the exchange is neglected) cylindrical dots. A property associated with a vortex structure becomes evident from an analysis of confinement phenomena of magnetic oscillations in a ferrite disk with a dominating role of magnetic-dipolar (non-exchange-interaction) spectra. In this case the scalar (magnetostatic-potential) wave functions may have a phase singularity in a center of a dot. A non-zero azimuth component of the flow velocity demonstrates the vortex structure. The vortices are guaranteed by the chiral edge states of magnetic-dipolar modes in a quasi-2D ferrite disk.

References in corpus (2)

• Microwave whirlpools in a rectangular-waveguide cavity with a thin ferrite disk
• Excitation of vortices using linear and nonlinear magnetostatic waves

Cited by in corpus (7)

• Electric self inductance of quasi-2D magnetic-dipolar-mode ferrite disks
• Eigen electric moments of magnetic-dipolar modes in quasi-2D ferrite disk particles
• Magnetic-dipolar-mode Fano resonances for microwave spectroscopy of high absorption matter
• Unidirectional magnetoelectric-field multiresonant tunneling
• Magnetic dipolar modes in magnon-polariton condensates
• Magnetoelectric-field electrodynamics: Search for magnetoelectric point scatterers
• Chiral-field microwave antennas (Chiral microwave near fields for far-field radiation)