Geometrically stabilized skyrmionic vortex in FeGe tetrahedral nanoparticles

Niitsu, Kodai; Liu, Yizhou; Booth, Alexander C.; Yu, Xiuzhen; Mathur, Nitish; Stolt, Matthew J.; Shindo, Daisuke; Jin, Song; Zang, Jiadong; Nagaosa, Naoto; Tokura, Yoshinori

doi:10.1038/s41563-021-01186-x

Geometrically stabilized skyrmionic vortex in FeGe tetrahedral nanoparticles

Journal Article · Thu Jan 27 04:00:00 EST 2022 · Nature Materials

DOI:https://doi.org/10.1038/s41563-021-01186-x· OSTI ID:1972952

^[1]; Liu, Yizhou ^[2]; ^[3]; ^[2]; Mathur, Nitish ^[4]; Stolt, Matthew J. ^[4]; Shindo, Daisuke ^[2]; ^[4]; ^[3]; Nagaosa, Naoto ^[5]; ^[5]

RIKEN Center for Emergent Matter Science (CEMS), Wako (Japan); Kyoto Univ. (Japan); University of New Hampshire
RIKEN Center for Emergent Matter Science (CEMS), Wako (Japan)
Univ. of New Hampshire, Durham, NH (United States)
Univ. of Wisconsin, Madison, WI (United States)
RIKEN Center for Emergent Matter Science (CEMS), Wako (Japan); Univ. of Tokyo (Japan)

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. Furthermore, our findings shed light on zero-dimensional geometrical confinement as a route to engineer and manipulate individual skyrmionic metastructures.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of New Hampshire, Durham, NH (United States)

Sponsoring Organization:: USDOE Office of Science, Basic Energy Sciences (BES); JSPS and JST CREST; US NSF

Grant/Contract Number:: SC0020221

OSTI ID:: 1972952

Journal Information:: Nature Materials, Journal Name: Nature Materials Journal Issue: 3 Vol. 21; ISSN 1476-1122

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

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