Publication Date:
2018-01-06
Description:
Author(s): J. S. White, Á. Butykai, R. Cubitt, D. Honecker, C. D. Dewhurst, L. F. Kiss, V. Tsurkan, and S. Bordács It was recently proposed that multiferroic GaV 4 S 8 hosts a new Néel-type of magnetic skyrmion lattice in its bulk, though direct microscopic experimental evidence of this type of skyrmion state has been absent up to now. By using polarized small-angle neutron scattering, the authors show unambiguously that the spins twist cycloidally in all modulated phases of GaV 4 S 8 , consistent with that expected for Néel-type skyrmions. In a further contrast to any other skyrmion host material, all of the spiral and skyrmion phases in GaV 4 S 8 are shown to be stable only at finite temperature due to a delicate interplay between thermal agitation and a strong magnetic anisotropy. [Phys. Rev. B 97, 020401(R)] Published Fri Jan 05, 2018
Keywords:
Magnetism
Print ISSN:
1098-0121
Electronic ISSN:
1095-3795
Topics:
Physics