Controlled nucleation of hopfions with field pulses
Abstract We demonstrate a mechanism for the deterministic nucleation of magnetic hopfions in cylindrical nanopillars via transient magnetic field pulses. By exploiting a chiral magnetic cylinder with engineered surface uniaxial anisotropy, we show that field pulses trigger a non-equilibrium magnetization dynamics. Depending on the pulse amplitude, the system relaxes into distinct topologically protected energy minima, stabilizing either isolated hopfions or coexisting states with other three-dimensional solitons. This approach offers a framework for manipulating 3D topological textures without requiring localized spin-polarized currents, broadening the understanding of three-dimensional nanomagnetism.
Authors
- Vagson Luiz Carvalho-Santos (ORCID: https://orcid.org/0000-0002-2759-2152)
- Sebastian Castillo-Sepulveda (ORCID: https://orcid.org/0000-0001-7730-8773)
- R. M. Corona
- D. Altbir
- G. Saéz
Institutions
- Universidade Federal de Viçosa (BR)
- Forschungszentrum Jülich (DE)
- Universidad Autónoma de Chile (CL)
- Metropolitan University of Technology (CL)
- Universidad Diego Portales (CL)
Publication Details
- Journal
- Scientific Reports
- Published
- 2026-10-17
- DOI
- https://doi.org/10.1038/s41598-026-75777-6
- Primary Topic
- Magnetic properties of thin films
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Conselho Nacional de Desenvolvimento Científico e Tecnológico
- Fundação de Amparo à Pesquisa do Estado de Minas Gerais
- Agencia Nacional de Investigación y Desarrollo
- Fondo Nacional de Desarrollo Científico y Tecnológico
- Centro para el Desarrollo de la Nanociencia y la Nanotecnología
- Universidad Tecnológica Metropolitana