MISC

2017年5月22日

Fan-type spin structure in uni-axial chiral magnets

  • Misako Shinozaki
  • ,
  • Shintaro Hoshino
  • ,
  • Yusuke Masaki
  • ,
  • A. N. Bogdanov
  • ,
  • A. O. Leonov
  • ,
  • Jun-ichiro Kishine
  • ,
  • Yusuke Kato

記述言語
掲載種別
機関テクニカルレポート,技術報告書,プレプリント等

We investigate the spin structure of a uni-axial chiral magnet near the<br />
transition temperatures in low fields perpendicular to the helical axis. We<br />
find a fan-type modulation structure where the clockwise and counterclockwise<br />
windings appear alternatively along the propagation direction of the modulation<br />
structure. This structure is often realized in a Yoshimori-type (non-chiral)<br />
helimagnet but it is rarely realized in a chiral helimagnet. To discuss<br />
underlying physics of this structure, we reconsider the phase diagram (phase<br />
boundary and crossover lines) through the free energy and asymptotic behaviors<br />
of isolated solitons. The fan structure appears slightly below the phase<br />
boundary of the continuous transition of instability-type. In this region,<br />
there are no solutions containing any types of isolated solitons to the mean<br />
field equations.

リンク情報
arXiv
http://arxiv.org/abs/arXiv:1705.07778
URL
http://arxiv.org/abs/1705.07778v1

エクスポート
BibTeX RIS