論文

査読有り 本文へのリンクあり
2019年7月1日

Surface-size and shape dependencies of change in chiral soliton number in submillimeter-scale crystals of chiral magnet CrNb<inf>3</inf>S<inf>6</inf>

AIP Advances
  • M. Ohkuma
  • ,
  • M. Mito
  • ,
  • N. Nakamura
  • ,
  • K. Tsuruta
  • ,
  • J. Ohe
  • ,
  • M. Shinozaki
  • ,
  • Y. Kato
  • ,
  • J. Kishine
  • ,
  • Y. Kousaka
  • ,
  • J. Akimitsu
  • ,
  • K. Inoue

9
7
開始ページ
075212
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1063/1.5092366
出版者・発行元
AMER INST PHYSICS

We examine the surface size- and shape-effects of soliton annihilation and soliton nucleation in chiral magnet CrNb S . We measure magnetization (M) curves of submillimeter-sized single crystals with an equal length along the c-axis (L = 10 μm) but with different cross sections in the ab-plane (S = 0.120-0.014 mm ). We find a ferromagnetic type of magnetizing (FMM) with a convex curve (d M/dH < 0) near zero field (H = 0) and a major jump in M near the forced ferromagnetic state, which are more conspicuous, compared with earlier samples with submillimeter L [K. Tsuruta et al. J. Phys. Soc. Jpn. 85, 013707 (2016)]. A new finding is that the major jump in M occurs at lower fields in samples with the smaller S . We further perform numerical simulation of the magnetization process with the Landau-Lifshitz-Gilbert equation of the Langevin-type. Based on the numerical results, we attribute the FMM at small fields to rapid annihilation of soliton assisted by the reduction of Dzyaloshinskii-Moriya interaction near the surfaces. We also discuss possible penetration processes of chiral soliton through the ac-(bc-)plane as well as ab-plane, and its relation to the major jump in M. Our experimental and calculated results will contribute to understanding of the effects of topological metastability in chiral magnets. 3 6 c ab c ab 2 2 2


リンク情報
DOI
https://doi.org/10.1063/1.5092366
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000478910300014&DestApp=WOS_CPL
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85069528423&origin=inward 本文へのリンクあり
Scopus Citedby
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ID情報
  • DOI : 10.1063/1.5092366
  • ISSN : 2158-3226
  • eISSN : 2158-3226
  • SCOPUS ID : 85069528423
  • Web of Science ID : WOS:000478910300014

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