Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8

I. Kezsmarki, S. Bordacs, P. Milde, E. Neuber, L. M. Eng, J. S. White, H. M. Rønnow, C. D. Dewhurst, Masahito Mochizuki, K. Yanai, H. Nakamura, D. Ehlers, V. Tsurkan, A. Loidl

Research output: Contribution to journalArticle

190 Citations (Scopus)

Abstract

Following the early prediction of the skyrmion lattice (SkL)-a periodic array of spin vortices-it has been observed recently in various magnetic crystals mostly with chiral structure. Although non-chiral but polar crystals with Cnv symmetry were identified as ideal SkL hosts in pioneering theoretical studies, this archetype of SkL has remained experimentally unexplored. Here, we report the discovery of a SkL in the polar magnetic semiconductor GaV4S8 with rhombohedral (C3v) symmetry and easy axis anisotropy. The SkL exists over an unusually broad temperature range compared with other bulk crystals and the orientation of the vortices is not controlled by the external magnetic field, but instead confined to the magnetic easy axis. Supporting theory attributes these unique features to a new Neel-type of SkL describable as a superposition of spin cycloids in contrast to the Bloch-type SkL in chiral magnets described in terms of spin helices.

Original languageEnglish
Pages (from-to)1116-1122
Number of pages7
JournalNature Materials
Volume14
Issue number11
DOIs
Publication statusPublished - 2015 Nov 1
Externally publishedYes

Fingerprint

Magnetic semiconductors
Crystal lattices
Crystal orientation
Crystal symmetry
Crystals
Vortex flow
Magnets
Anisotropy
Magnetic fields
cycloids
vortices
crystals
symmetry
helices
magnets
Temperature
anisotropy
predictions
magnetic fields

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Kezsmarki, I., Bordacs, S., Milde, P., Neuber, E., Eng, L. M., White, J. S., ... Loidl, A. (2015). Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8. Nature Materials, 14(11), 1116-1122. https://doi.org/10.1038/nmat4402

Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8. / Kezsmarki, I.; Bordacs, S.; Milde, P.; Neuber, E.; Eng, L. M.; White, J. S.; Rønnow, H. M.; Dewhurst, C. D.; Mochizuki, Masahito; Yanai, K.; Nakamura, H.; Ehlers, D.; Tsurkan, V.; Loidl, A.

In: Nature Materials, Vol. 14, No. 11, 01.11.2015, p. 1116-1122.

Research output: Contribution to journalArticle

Kezsmarki, I, Bordacs, S, Milde, P, Neuber, E, Eng, LM, White, JS, Rønnow, HM, Dewhurst, CD, Mochizuki, M, Yanai, K, Nakamura, H, Ehlers, D, Tsurkan, V & Loidl, A 2015, 'Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8', Nature Materials, vol. 14, no. 11, pp. 1116-1122. https://doi.org/10.1038/nmat4402
Kezsmarki I, Bordacs S, Milde P, Neuber E, Eng LM, White JS et al. Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8. Nature Materials. 2015 Nov 1;14(11):1116-1122. https://doi.org/10.1038/nmat4402
Kezsmarki, I. ; Bordacs, S. ; Milde, P. ; Neuber, E. ; Eng, L. M. ; White, J. S. ; Rønnow, H. M. ; Dewhurst, C. D. ; Mochizuki, Masahito ; Yanai, K. ; Nakamura, H. ; Ehlers, D. ; Tsurkan, V. ; Loidl, A. / Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8. In: Nature Materials. 2015 ; Vol. 14, No. 11. pp. 1116-1122.
@article{4f8b3dd0e01f4ac0ac05ff25eec52f81,
title = "Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8",
abstract = "Following the early prediction of the skyrmion lattice (SkL)-a periodic array of spin vortices-it has been observed recently in various magnetic crystals mostly with chiral structure. Although non-chiral but polar crystals with Cnv symmetry were identified as ideal SkL hosts in pioneering theoretical studies, this archetype of SkL has remained experimentally unexplored. Here, we report the discovery of a SkL in the polar magnetic semiconductor GaV4S8 with rhombohedral (C3v) symmetry and easy axis anisotropy. The SkL exists over an unusually broad temperature range compared with other bulk crystals and the orientation of the vortices is not controlled by the external magnetic field, but instead confined to the magnetic easy axis. Supporting theory attributes these unique features to a new Neel-type of SkL describable as a superposition of spin cycloids in contrast to the Bloch-type SkL in chiral magnets described in terms of spin helices.",
author = "I. Kezsmarki and S. Bordacs and P. Milde and E. Neuber and Eng, {L. M.} and White, {J. S.} and R{\o}nnow, {H. M.} and Dewhurst, {C. D.} and Masahito Mochizuki and K. Yanai and H. Nakamura and D. Ehlers and V. Tsurkan and A. Loidl",
year = "2015",
month = "11",
day = "1",
doi = "10.1038/nmat4402",
language = "English",
volume = "14",
pages = "1116--1122",
journal = "Nature Materials",
issn = "1476-1122",
publisher = "Nature Publishing Group",
number = "11",

}

TY - JOUR

T1 - Neel-type skyrmion lattice with confined orientation in the polar magnetic semiconductor GaV4S8

AU - Kezsmarki, I.

AU - Bordacs, S.

AU - Milde, P.

AU - Neuber, E.

AU - Eng, L. M.

AU - White, J. S.

AU - Rønnow, H. M.

AU - Dewhurst, C. D.

AU - Mochizuki, Masahito

AU - Yanai, K.

AU - Nakamura, H.

AU - Ehlers, D.

AU - Tsurkan, V.

AU - Loidl, A.

PY - 2015/11/1

Y1 - 2015/11/1

N2 - Following the early prediction of the skyrmion lattice (SkL)-a periodic array of spin vortices-it has been observed recently in various magnetic crystals mostly with chiral structure. Although non-chiral but polar crystals with Cnv symmetry were identified as ideal SkL hosts in pioneering theoretical studies, this archetype of SkL has remained experimentally unexplored. Here, we report the discovery of a SkL in the polar magnetic semiconductor GaV4S8 with rhombohedral (C3v) symmetry and easy axis anisotropy. The SkL exists over an unusually broad temperature range compared with other bulk crystals and the orientation of the vortices is not controlled by the external magnetic field, but instead confined to the magnetic easy axis. Supporting theory attributes these unique features to a new Neel-type of SkL describable as a superposition of spin cycloids in contrast to the Bloch-type SkL in chiral magnets described in terms of spin helices.

AB - Following the early prediction of the skyrmion lattice (SkL)-a periodic array of spin vortices-it has been observed recently in various magnetic crystals mostly with chiral structure. Although non-chiral but polar crystals with Cnv symmetry were identified as ideal SkL hosts in pioneering theoretical studies, this archetype of SkL has remained experimentally unexplored. Here, we report the discovery of a SkL in the polar magnetic semiconductor GaV4S8 with rhombohedral (C3v) symmetry and easy axis anisotropy. The SkL exists over an unusually broad temperature range compared with other bulk crystals and the orientation of the vortices is not controlled by the external magnetic field, but instead confined to the magnetic easy axis. Supporting theory attributes these unique features to a new Neel-type of SkL describable as a superposition of spin cycloids in contrast to the Bloch-type SkL in chiral magnets described in terms of spin helices.

UR - http://www.scopus.com/inward/record.url?scp=84945496803&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84945496803&partnerID=8YFLogxK

U2 - 10.1038/nmat4402

DO - 10.1038/nmat4402

M3 - Article

AN - SCOPUS:84945496803

VL - 14

SP - 1116

EP - 1122

JO - Nature Materials

JF - Nature Materials

SN - 1476-1122

IS - 11

ER -