Geometrically Stabilized Skyrmionic Vortex in FeGe Tetrahedral Nanoparticles
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- Kodai Niitsu
- RIKEN
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- Yizhou Liu
- RIKEN
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- Alexander Booth
- University of New Hampshire
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- Xiuzhen Yu
- RIKEN
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- Nitish Mathur
- University of Wisconsin-Madison
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- Matthew Stolt
- University of Wisconsin-Madison
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- Daisuke Shindo
- RIKEN
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- Song Jin
- University of Wisconsin-Madison
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- Jiadong Zang
- University of New Hampshire
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- Naoto Nagaosa
- The University of Tokyo/RIKEN
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- Yoshinori Tokura
- RIKEN
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<jats:title>Abstract</jats:title> <jats:p>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.</jats:p>
収録刊行物
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- Nature Materials
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Nature Materials 21 (3), 305-310, 2021-03-17
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