Magnetic hopfions in toroidal nanostructures driven by an Oersted magnetic field

Autor:	S. Castillo-Sepúlveda, Dora Altbir, R.M. Corona, Vagson L. Carvalho-Santos, R. Cacilhas
Rok vydání:	2021
Předmět:	Physics Toroid Nanostructure Annihilation Condensed matter physics Texture (cosmology) Oersted Nucleation Action (physics) Magnetic field
Zdroj:	Physical Review B. 104
ISSN:	2469-9969 2469-9950
DOI:	10.1103/physrevb.104.184406
Popis:	The search for magnetic hopfions has been the focus of intense research during the last years. In this direction, and using micromagnetic simulations, we studied the magnetization reversal mechanism in toroidal nanoparticles under the action of an Oersted magnetic field. Our results evidence the nucleation of four magnetic configurations as a function of geometry, two of them being hopfion-like textures. These mechanisms are preferred for large toroidal structures. The annihilation of such texture is indicated by strong changes in the energy, which characterizes a topological transition.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::39e28cb9c0834e219c993b2440c0da31 https://doi.org/10.1103/physrevb.104.184406 Zobrazit plný text záznamu