Real space observation of skyrmion polycrystallization and its domain boundary behavior in FeGe1-xSix

Masahiro Nagao, Yeong Gi So, Hiroyuki Yoshida, Takuro Nagai, Keiichi Edagawa, Kaichi Saito, Toru Hara, Atsushi Yamazaki, Koji Kimoto

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Abstract

In magnetic skyrmion crystals (SkXs), the quality of skyrmion ordering affects the motion under electric current and temperature gradient. However, the crystalline nature itself remains an open issue. We report the observation of skyrmion polycrystallization in FeGe1-xSix as a function of x by Lorentz transmission electron microscopy. With increasing x, the SkX changes from single crystalline to polycrystalline, concomitantly with the formation of the interfaces referred to as domain boundaries. In situ observations have revealed that the domain boundary formation competes the tendency to accommodate the differences between orientations of the SkX.

Original languageEnglish
Article number033001
JournalApplied Physics Express
Volume8
Issue number3
DOIs
Publication statusPublished - 2015 Mar 1

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ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Nagao, M., So, Y. G., Yoshida, H., Nagai, T., Edagawa, K., Saito, K., Hara, T., Yamazaki, A., & Kimoto, K. (2015). Real space observation of skyrmion polycrystallization and its domain boundary behavior in FeGe1-xSix. Applied Physics Express, 8(3), [033001]. https://doi.org/10.7567/APEX.8.033001