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

doi:10.7567/APEX.8.033001

Real space observation of skyrmion polycrystallization and its domain boundary behavior in FeGe_1-xSi_x

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

^*Corresponding author for this work

School of Creative Science and Engineering

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

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 FeGe_1-xSi_x 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 language	English
Article number	033001
Journal	Applied Physics Express
Volume	8
Issue number	3
DOIs	https://doi.org/10.7567/APEX.8.033001
Publication status	Published - 2015 Mar 1

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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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.",

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AU - Nagao, Masahiro

AU - So, Yeong Gi

AU - Yoshida, Hiroyuki

AU - Nagai, Takuro

AU - Edagawa, Keiichi

AU - Saito, Kaichi

AU - Hara, Toru

AU - Yamazaki, Atsushi

AU - Kimoto, Koji

PY - 2015/3/1

Y1 - 2015/3/1

N2 - 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.

AB - 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.

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Real space observation of skyrmion polycrystallization and its domain boundary behavior in FeGe_1-xSi_x

Abstract

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