Geometrically stabilized skyrmionic vortex in FeGe tetrahedral nanoparticles

The concept of topology has dramatically expanded the research landscape of magnetism, leading to the discovery of numerous magnetic textures with intriguing topological properties. A magnetic skyrmion is an emergent topological magnetic texture with a string-like structure in three dimensions and a...

Full description

Saved in:
Bibliographic Details
Published in:Nature materials 2022-03, Vol.21 (3), p.305-310
Main Authors: Niitsu, Kodai, Liu, Yizhou, Booth, Alexander C., Yu, Xiuzhen, Mathur, Nitish, Stolt, Matthew J., Shindo, Daisuke, Jin, Song, Zang, Jiadong, Nagaosa, Naoto, Tokura, Yoshinori
Format: Article
Language:English
Subjects:
639/301/119/997
639/301/357/354
639/301/357/997
639/925/357/354
639/925/930/2735
Biomaterials
Chemistry and Materials Science
Condensed Matter Physics
Imaging techniques
Magnetic properties and materials
MATERIALS SCIENCE
Nanoparticles
Nanotechnology
Optical and Electronic Materials
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The concept of topology has dramatically expanded the research landscape of magnetism, leading to the discovery of numerous magnetic textures with intriguing topological properties. A magnetic skyrmion is an emergent topological magnetic texture with a string-like structure in three dimensions and a disk-like structure in one and two dimensions. Skyrmions in zero dimensions have remained elusive due to challenges from many competing orders. Here, by combining electron holography and micromagnetic simulations, we uncover the real-space magnetic configurations of a skyrmionic vortex structure confined in a B20-type FeGe tetrahedral nanoparticle. An isolated skyrmionic vortex forms at the ground state and this texture shows excellent robustness against temperature without applying a magnetic field. Our findings shed light on zero-dimensional geometrical confinement as a route to engineer and manipulate individual skyrmionic metastructures. The real-space magnetic configurations of a zero-dimensional skyrmionic vortex structure is uncovered using electron holography and micromagnetic simulations.
ISSN:1476-1122
1476-4660
DOI:10.1038/s41563-021-01186-x