Geometrical protection of topological magnetic solitons in microprocessed chiral magnets

Masaki Mito; Hiroyuki Ohsumi; Kazuki Tsuruta; Yoshinori Kotani; Tetsuya Nakamura; Yoshihiko Togawa; Misako Shinozaki; Yusuke Kato; Jun Ichiro Kishine; Jun Ichiro Ohe; Yusuke Kousaka; Jun Akimitsu; Katsuya Inoue

doi:10.1103/PhysRevB.97.024408

Geometrical protection of topological magnetic solitons in microprocessed chiral magnets

Masaki Mito, Hiroyuki Ohsumi, Kazuki Tsuruta, Yoshinori Kotani, Tetsuya Nakamura, Yoshihiko Togawa, Misako Shinozaki, Yusuke Kato, Jun Ichiro Kishine, Jun Ichiro Ohe, Yusuke Kousaka, Jun Akimitsu, Katsuya Inoue

Research Institute for Interdisciplinary Science

Research output: Contribution to journal › Article

13 Citations (Scopus)

Abstract

A chiral soliton lattice stabilized in a monoaxial chiral magnet CrNb3S6 is a magnetic superlattice consisting of magnetic kinks with a ferromagnetic background. The magnetic kinks are considered to be topological magnetic solitons (TMSs). Changes in the TMS number yield discretized responses in magnetization and electrical conductivity, and this effect is more prominent in smaller crystals. We demonstrate that, in microprocessed CrNb3S6 crystals, TMSs are geometrically protected through element-selected micromagnetometry using soft x-ray magnetic circular dichroism (MCD). A series of x-ray MCD data is supported by mean-field and micromagnetic analyses. By designing the microcrystal geometry, TMS numbers can be successfully changed and fixed over a wide range of magnetic fields.

Original language	English
Article number	024408
Journal	Physical Review B
Volume	97
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.97.024408
Publication status	Published - Jan 9 2018

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Mito, M., Ohsumi, H., Tsuruta, K., Kotani, Y., Nakamura, T., Togawa, Y., Shinozaki, M., Kato, Y., Kishine, J. I., Ohe, J. I., Kousaka, Y., Akimitsu, J., & Inoue, K. (2018). Geometrical protection of topological magnetic solitons in microprocessed chiral magnets. Physical Review B, 97(2), [024408]. https://doi.org/10.1103/PhysRevB.97.024408

Geometrical protection of topological magnetic solitons in microprocessed chiral magnets. / Mito, Masaki; Ohsumi, Hiroyuki; Tsuruta, Kazuki; Kotani, Yoshinori; Nakamura, Tetsuya; Togawa, Yoshihiko; Shinozaki, Misako; Kato, Yusuke; Kishine, Jun Ichiro; Ohe, Jun Ichiro; Kousaka, Yusuke; Akimitsu, Jun; Inoue, Katsuya.

In: Physical Review B, Vol. 97, No. 2, 024408, 09.01.2018.

Research output: Contribution to journal › Article

Mito, Masaki ; Ohsumi, Hiroyuki ; Tsuruta, Kazuki ; Kotani, Yoshinori ; Nakamura, Tetsuya ; Togawa, Yoshihiko ; Shinozaki, Misako ; Kato, Yusuke ; Kishine, Jun Ichiro ; Ohe, Jun Ichiro ; Kousaka, Yusuke ; Akimitsu, Jun ; Inoue, Katsuya. / Geometrical protection of topological magnetic solitons in microprocessed chiral magnets. In: Physical Review B. 2018 ; Vol. 97, No. 2.

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abstract = "A chiral soliton lattice stabilized in a monoaxial chiral magnet CrNb3S6 is a magnetic superlattice consisting of magnetic kinks with a ferromagnetic background. The magnetic kinks are considered to be topological magnetic solitons (TMSs). Changes in the TMS number yield discretized responses in magnetization and electrical conductivity, and this effect is more prominent in smaller crystals. We demonstrate that, in microprocessed CrNb3S6 crystals, TMSs are geometrically protected through element-selected micromagnetometry using soft x-ray magnetic circular dichroism (MCD). A series of x-ray MCD data is supported by mean-field and micromagnetic analyses. By designing the microcrystal geometry, TMS numbers can be successfully changed and fixed over a wide range of magnetic fields.",

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AU - Togawa, Yoshihiko

AU - Shinozaki, Misako

AU - Kato, Yusuke

AU - Kishine, Jun Ichiro

AU - Ohe, Jun Ichiro

AU - Kousaka, Yusuke

AU - Akimitsu, Jun

AU - Inoue, Katsuya

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