BROWSE

ITEM VIEW & DOWNLOAD

Revealing the three-dimensional arrangement of polar topology in nanoparticles

Cited 0 time in webofscience Cited 0 time in scopus
46 Viewed 0 Downloaded
Title
Revealing the three-dimensional arrangement of polar topology in nanoparticles
Author(s)
Jeong, Chaehwa; Lee, Juhyeok; Jo, Hyesung; Oh, Jaewhan; Baik, Hionsuck; Go, Kyoung-June; Son, Junwoo; Si-Young Choi; Prosandeev, Sergey; Bellaiche, Laurent; Yang, Yongsoo
Publication Date
2024-05
Journal
Nature Communications, v.15, no.1
Publisher
Nature Publishing Group
Abstract
In the early 2000s, low dimensional ferroelectric systems were predicted to have topologically nontrivial polar structures, such as vortices or skyrmions, depending on mechanical or electrical boundary conditions. A few variants of these structures have been experimentally observed in thin film model systems, where they are engineered by balancing electrostatic charge and elastic distortion energies. However, the measurement and classification of topological textures for general ferroelectric nanostructures have remained elusive, as it requires mapping the local polarization at the atomic scale in three dimensions. Here we unveil topological polar structures in ferroelectric BaTiO3 nanoparticles via atomic electron tomography, which enables us to reconstruct the full three-dimensional arrangement of cation atoms at an individual atom level. Our three-dimensional polarization maps reveal clear topological orderings, along with evidence of size-dependent topological transitions from a single vortex structure to multiple vortices, consistent with theoretical predictions. The discovery of the predicted topological polar ordering in nanoscale ferroelectrics, independent of epitaxial strain, widens the research perspective and offers potential for practical applications utilizing contact-free switchable toroidal moments. © The Author(s) 2024.
URI
https://pr.ibs.re.kr/handle/8788114/15181
DOI
10.1038/s41467-024-48082-x
Appears in Collections:
Center for Van der Waals Quantum Solids(반데르발스 양자 물질 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse