Chiral soliton lattice in chiral magnetic crystal crnb3s6

Y. Togawa, T. Koyama, S. Mori, Y. Kousaka, Jun Akimitsu, S. Nishihara, K. Inoue, A. S. Ovchinnikov, J. Kishine

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We microscopically investigate chiral magnetic orders in the absence and presence of magnetic field in a chiral magnetic crystal CrNb3S6 by means of low-temperature Lorenz transmission electron microscopy and small-angle electron scattering method. Based on detailed analyses in both real and reciprocal space, we directly observe that chiral soliton lattice (CSL) emerges in small magnetic fields applied perpendicular to the chiral crystallographic axis. CSL develops from chiral helimagnetic structure (CHM) with increasing the spatial period from 48 nm toward sample size in rising magnetic fields. Chiral magnetic orders of CSL and CHM do not exhibit any structural dislocation, indicating their high stability and robustness. This is because chiral magnetic orders are macroscopically induced by monoaxial Dzyaloshinkii-Moriya exchange interaction that is allowed in hexagonal CrNb3S6 crystals belonging to noncentrosymmetric chiral space group. Present observations of periodic, nonlinear, tunable, and robust CSL will be the first step to explore fascinating functions of CSL for magnetic and spintronic device applications using chiral magnets.

Original languageEnglish
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume61
Issue numberSUPLL.1
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

Solitons
Crystal lattices
Crystals
Magnetic fields
Magnetoelectronics
Electron scattering
Exchange interactions
Magnets
Transmission electron microscopy
Temperature

Keywords

  • Chiral magnet
  • Chiral soliton lattice
  • Lorentz transmission electron microscopy
  • Small-angle electron scattering

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Chiral soliton lattice in chiral magnetic crystal crnb3s6. / Togawa, Y.; Koyama, T.; Mori, S.; Kousaka, Y.; Akimitsu, Jun; Nishihara, S.; Inoue, K.; Ovchinnikov, A. S.; Kishine, J.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 61, No. SUPLL.1, 2014.

Research output: Contribution to journalArticle

Togawa, Y, Koyama, T, Mori, S, Kousaka, Y, Akimitsu, J, Nishihara, S, Inoue, K, Ovchinnikov, AS & Kishine, J 2014, 'Chiral soliton lattice in chiral magnetic crystal crnb3s6', Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, vol. 61, no. SUPLL.1. https://doi.org/10.2497/jjspm.61.S34
Togawa, Y. ; Koyama, T. ; Mori, S. ; Kousaka, Y. ; Akimitsu, Jun ; Nishihara, S. ; Inoue, K. ; Ovchinnikov, A. S. ; Kishine, J. / Chiral soliton lattice in chiral magnetic crystal crnb3s6. In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 2014 ; Vol. 61, No. SUPLL.1.
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AU - Koyama, T.

AU - Mori, S.

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AU - Nishihara, S.

AU - Inoue, K.

AU - Ovchinnikov, A. S.

AU - Kishine, J.

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N2 - We microscopically investigate chiral magnetic orders in the absence and presence of magnetic field in a chiral magnetic crystal CrNb3S6 by means of low-temperature Lorenz transmission electron microscopy and small-angle electron scattering method. Based on detailed analyses in both real and reciprocal space, we directly observe that chiral soliton lattice (CSL) emerges in small magnetic fields applied perpendicular to the chiral crystallographic axis. CSL develops from chiral helimagnetic structure (CHM) with increasing the spatial period from 48 nm toward sample size in rising magnetic fields. Chiral magnetic orders of CSL and CHM do not exhibit any structural dislocation, indicating their high stability and robustness. This is because chiral magnetic orders are macroscopically induced by monoaxial Dzyaloshinkii-Moriya exchange interaction that is allowed in hexagonal CrNb3S6 crystals belonging to noncentrosymmetric chiral space group. Present observations of periodic, nonlinear, tunable, and robust CSL will be the first step to explore fascinating functions of CSL for magnetic and spintronic device applications using chiral magnets.

AB - We microscopically investigate chiral magnetic orders in the absence and presence of magnetic field in a chiral magnetic crystal CrNb3S6 by means of low-temperature Lorenz transmission electron microscopy and small-angle electron scattering method. Based on detailed analyses in both real and reciprocal space, we directly observe that chiral soliton lattice (CSL) emerges in small magnetic fields applied perpendicular to the chiral crystallographic axis. CSL develops from chiral helimagnetic structure (CHM) with increasing the spatial period from 48 nm toward sample size in rising magnetic fields. Chiral magnetic orders of CSL and CHM do not exhibit any structural dislocation, indicating their high stability and robustness. This is because chiral magnetic orders are macroscopically induced by monoaxial Dzyaloshinkii-Moriya exchange interaction that is allowed in hexagonal CrNb3S6 crystals belonging to noncentrosymmetric chiral space group. Present observations of periodic, nonlinear, tunable, and robust CSL will be the first step to explore fascinating functions of CSL for magnetic and spintronic device applications using chiral magnets.

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KW - Chiral soliton lattice

KW - Lorentz transmission electron microscopy

KW - Small-angle electron scattering

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