# Multiple vortex-antivortex pair generation in magnetic nanodots - Condensed Matter > Strongly Correlated Electrons

Multiple vortex-antivortex pair generation in magnetic nanodots - Condensed Matter > Strongly Correlated Electrons - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: The interaction of a magnetic vortex with a rotating magnetic field causesthe nucleation of a vortex-antivortex pair leading to a vortex polarityswitching. The key point of this process is the creation of a dip, which can beinterpreted as a nonlinear resonance in the system of certain magnon modes withnonlinear coupling. The usually observed single-dip structure is a particularcase of a multidip structure. The dynamics of the structure with $n$ dips isdescribed as the dynamics of nonlinearly coupled modes with azimuthal numbers$m=0,\pm n,\pm 2n$. The multidip structure with arbitrary number of vortexantivortex pairs can be obtained in vortex-state nanodisk using a space- andtime-varying magnetic field. A scheme of a possible experimental setup formultidip structure generation is proposed.

Autor: Yuri Gaididei, Volodymyr P. Kravchuk, Denis D. Sheka, Franz G. Mertens

Fuente: https://arxiv.org/