Robust dynamics of antiferromagnetic skyrmion driven by spin-polarized current in small thin disks

Autor:	Silva, R. L., Silva, R. C., Moura-Melo, W. A., Pereira, A. R.
Rok vydání:	2020
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Soft Condensed Matter
Druh dokumentu:	Working Paper
DOI:	10.1063/5.0024003
Popis:	We investigate skyrmion configuration and dynamics in antiferromagnetic thin disks. It is shown that the skyrmion acquires oscillatory dynamics with well-defined amplitude and frequency which may be controlled on demand by the spin-polarized current. Such dynamics are robust in the sense that an interface between two half-disks cannot change the dynamics appreciably. Indeed, the skyrmion keeps its oscillatory despite crossing this interface. The way skyrmion found to do that is by modifying its core region shape so that its total energy is unaltered for several cycles. Comment: 5 pages, 12 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2008.01061 Zobrazit plný text záznamu View this record from Arxiv