Equilibrium skyrmion lattice ground state in a polar easy-plane magnet

S. Bordács, A. Butykai, B. G. Szigeti, J. S. White, R. Cubitt, A. O. Leonov, S. Widmann, D. Ehlers, H. A.Krug Von Nidda, V. Tsurkan, A. Loidl, I. Kézsmárki

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The skyrmion lattice state (SkL), a crystal built of mesoscopic spin vortices, gains its stability via thermal fluctuations in all bulk skyrmion host materials known to date. Therefore, its existence is limited to a narrow temperature region below the paramagnetic state. This stability range can drastically increase in systems with restricted geometries, such as thin films, interfaces and nanowires. Thermal quenching can also promote the SkL as a metastable state over extended temperature ranges. Here, we demonstrate more generally that a proper choice of material parameters alone guarantees the thermodynamic stability of the SkL over the full temperature range below the paramagnetic state down to zero kelvin. We found that GaV4Se8, a polar magnet with easy-plane anisotropy, hosts a robust Néel-type SkL even in its ground state. Our supporting theory confirms that polar magnets with weak uniaxial anisotropy are ideal candidates to realize SkLs with wide stability ranges.

Original languageEnglish
Article number7584
JournalScientific Reports
Volume7
Issue number1
DOIs
Publication statusPublished - Dec 1 2017

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magnets
ground state
anisotropy
metastable state
temperature
nanowires
thermal stability
quenching
vortices
thermodynamics
thin films
geometry
crystals

ASJC Scopus subject areas

  • General

Cite this

Bordács, S., Butykai, A., Szigeti, B. G., White, J. S., Cubitt, R., Leonov, A. O., ... Kézsmárki, I. (2017). Equilibrium skyrmion lattice ground state in a polar easy-plane magnet. Scientific Reports, 7(1), [7584]. https://doi.org/10.1038/s41598-017-07996-x

Equilibrium skyrmion lattice ground state in a polar easy-plane magnet. / Bordács, S.; Butykai, A.; Szigeti, B. G.; White, J. S.; Cubitt, R.; Leonov, A. O.; Widmann, S.; Ehlers, D.; Von Nidda, H. A.Krug; Tsurkan, V.; Loidl, A.; Kézsmárki, I.

In: Scientific Reports, Vol. 7, No. 1, 7584, 01.12.2017.

Research output: Contribution to journalArticle

Bordács, S, Butykai, A, Szigeti, BG, White, JS, Cubitt, R, Leonov, AO, Widmann, S, Ehlers, D, Von Nidda, HAK, Tsurkan, V, Loidl, A & Kézsmárki, I 2017, 'Equilibrium skyrmion lattice ground state in a polar easy-plane magnet', Scientific Reports, vol. 7, no. 1, 7584. https://doi.org/10.1038/s41598-017-07996-x
Bordács S, Butykai A, Szigeti BG, White JS, Cubitt R, Leonov AO et al. Equilibrium skyrmion lattice ground state in a polar easy-plane magnet. Scientific Reports. 2017 Dec 1;7(1). 7584. https://doi.org/10.1038/s41598-017-07996-x
Bordács, S. ; Butykai, A. ; Szigeti, B. G. ; White, J. S. ; Cubitt, R. ; Leonov, A. O. ; Widmann, S. ; Ehlers, D. ; Von Nidda, H. A.Krug ; Tsurkan, V. ; Loidl, A. ; Kézsmárki, I. / Equilibrium skyrmion lattice ground state in a polar easy-plane magnet. In: Scientific Reports. 2017 ; Vol. 7, No. 1.
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