Geometrically stabilized skyrmionic vortex in FeGe tetrahedral nanoparticles

Autor: Song Jin, Alexander C. Booth, Daisuke Shindo, Xiuzhen Yu, Nitish Mathur, Jiadong Zang, Naoto Nagaosa, Kodai Niitsu, Yoshinori Tokura, Yizhou Liu, Matthew J. Stolt
Rok vydání: 2022
Předmět:
Zdroj: Nature Materials. 21:305-310
ISSN: 1476-4660
1476-1122
Popis: The concept of topology has dramatically expanded the 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 owing to challenges from many competing orders. Herein, by integrating electron holography and micromagnetic simulations, we uncover the real-space magnetic configurations of a novel skyrmionic vortex structure confined in a B20-type FeGe tetrahedral nanoparticle. This texture shows excellent robustness against temperature without applying a magnetic field; an isolated skyrmionic vortex forms at the ground state. These findings shed light on zero-dimensional geometrical confinement as a route to engineer and manipulate individual skyrmionic metastructures.
Databáze: OpenAIRE
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