Experimental observation of multiple- Q states for the magnetic skyrmion lattice and skyrmion excitations under a zero magnetic field

Masahiro Nagao, Yeong Gi So, Hiroyuki Yoshida, Kazunari Yamaura, Takuro Nagai, Toru Hara, Atsushi Yamazaki, Koji Kimoto

研究成果: Article査読

11 被引用数 (Scopus)

抄録

Model calculations indicate that the magnetic skyrmion lattice (SkL) is represented by a superposition of three spin helices at an angle of 120 to each other, the so-called triple-Q state. Using Lorentz transmission electron microscopy, we investigated the relationship between the SkL and the helix in FeGe thin films. After the magnetic field is removed, the ordered skyrmions are trapped inside helimagnetic domain walls (HDWs) where the different helical Q vectors are encountered. In situ observation revealed an unexpected topological excitation under such a zero-field state: skyrmions are spontaneously formed at HDWs.

本文言語English
論文番号140415
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
92
14
DOI
出版ステータスPublished - 2015 10月 27

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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