| Reference : Direct evidence for cycloidal modulations in the thermal-fluctuation-stabilized spin ... |
| Scientific journals : Article | |||
| Physical, chemical, mathematical & earth Sciences : Physics | |||
| Physics and Materials Science | |||
| http://hdl.handle.net/10993/41164 | |||
| Direct evidence for cycloidal modulations in the thermal-fluctuation-stabilized spin spiral and skyrmion states of GaV 4 S 8 | |
| English | |
| White, J. S. [> >] | |
| Butykai, A. [> >] | |
| Cubitt, R. [> >] | |
Honecker, Dirk  [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit] | |
| Dewhurst, C. D. [> >] | |
| Kiss, L. F. [> >] | |
| Tsurkan, V. [> >] | |
| Bordács, S. [> >] | |
| 2018 | |
| Physical Review. B | |
| American Physical Society | |
| 97 | |
| 2 | |
| 020401 | |
| Yes (verified by ORBilu) | |
| International | |
| 2469-9950 | |
| [en] We report small-angle neutron scattering studies of the lacunar spinelGaV4S8,which reveal the long-wavelength
<br />magnetic phases to be cycloidally modulated. Upon cooling, these modulated phases, including a recently <br />proposed Néel-type skyrmion phase, transform into a simple ferromagnetic state. These results indicate the <br />modulated phases in GaV4S8 gain their stability from thermal fluctuations, while at lower temperatures the <br />ferromagnetic state emerges in accord with the strong easy-axis magnetic anisotropy. Crucially, our study provides <br />microscopic evidence that the skyrmions in GaV4S8 indeed display a Néel-type helicity. More generally, our <br />approach can be applied to evidence the helicity of any bulk skyrmion phase. | |
| http://hdl.handle.net/10993/41164 | |
| also: http://hdl.handle.net/10993/41172 | |
| 10.1103/PhysRevB.97.020401 |
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