Spontaneous formation and dynamics of half-skyrmions in a chiral liquid-crystal film

Andriy Nych, Jun Ichi Fukuda, Uliana Ognysta, Slobodan Zumer, Igor Muševic

研究成果: Contribution to journalArticle査読

36 被引用数 (Scopus)

抄録

Skyrmions are coreless vortex-like excitations emerging in diverse condensed-matter systems, and real-time observation of their dynamics is still challenging. Here we report the first direct optical observation of the spontaneous formation of half-skyrmions. In a thin film of a chiral liquid crystal, depending on experimental conditions including film thickness, they form a hexagonal lattice whose lattice constant is a few hundred nanometres, or appear as isolated entities with topological defects compensating their charge. These half-skyrmions exhibit intriguing dynamical behaviour driven by thermal fluctuations. Numerical calculations of real-space images successfully corroborate the experimental observations despite the challenge because of the characteristic scale of the structures close to the optical resolution limit. A thin film of a chiral liquid crystal thus offers an intriguing platform that facilitates a direct investigation of the dynamics of topological excitations such as half-skyrmions and their manipulation with optical techniques.

本文言語英語
ページ(範囲)1215-1220
ページ数6
ジャーナルNature Physics
13
12
DOI
出版ステータス出版済み - 12 1 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

フィンガープリント 「Spontaneous formation and dynamics of half-skyrmions in a chiral liquid-crystal film」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル