Work

Tailoring Topological Magnetic States in Multilayer Nanostructures: Bloch Points, Chiral Bobbers, and Skyrmion Tubes

Year: 2025

Type: article

Abstract: Topological magnetic textures-including skyrmions, Bloch points, and chiral bobbers-exhibit extraordinary properties with significant potential for advanced information technologies. However, achieving precise control over specific topological states requires an understanding of their formation mechanisms and stabilization criteria in nanoscale materials. Our work addresses this challenge by investigating how tailored interactions in ferromagnetic multilayers govern the emergence of specific topological configurations. In this study, we investigate topological magnetic structures in ferromagnetic multilayers, focusing on the interplay between magnetic anisotropy, the Dzyaloshinskii-Moriya interaction, and interlayer exchange coupling. We demonstrate how these interactions govern the formation and stability of diverse 3D topological configurations, including Bloch-point-like structures, conical skyrmions, chiral bobbers, and skyrmion tubes. Optimal conditions for stabilizing specific defect types have been identified and phase diagrams have been constructed as a function of material parameters. These findings provide insights into the controlled design of magnetic textures for advanced spintronic applications.

Source: Nanomaterials

DOI: 10.3390/nano15191473

Authors: Zukhra Gareeva, Viktoria Filippova, Shamil Gareev, Ildus Sharafullin

Institutions: Russian Academy of Sciences, Institute of Physics of Molecules and Crystals, Ufa University of Science and Technology

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,896

Funder: Ministry of Science and Higher Education of the Russian Federation