Reference : Direct evidence for cycloidal modulations in the thermal-fluctuation-stabilized spin ... |
Scientific journals : Other | |||
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 GaV4S8 | |
English | |
White, J. S. [> >] | |
Butykai, A. [> >] | |
Cubitt, R. [> >] | |
Honecker, Dirk ![]() | |
Dewhurst, C. D. [> >] | |
Kiss, L. F. [> >] | |
Tsurkan, V. [> >] | |
Bordacs, S. [> >] | |
2018 | |
PHYSICAL REVIEW B | |
97 | |
2 | |
Yes (verified by ORBilu) | |
International | |
2469-9950 | |
[en] We report small-angle neutron scattering studies of the lacunar spinelGaV4S8,which reveal the long-wavelength
magnetic phases to be cycloidally modulated. Upon cooling, these modulated phases, including a recently proposed Néel-type skyrmion phase, transform into a simple ferromagnetic state. These results indicate the modulated phases in GaV4S8 gain their stability from thermal fluctuations, while at lower temperatures the ferromagnetic state emerges in accord with the strong easy-axis magnetic anisotropy. Crucially, our study provides microscopic evidence that the skyrmions in GaV4S8 indeed display a Néel-type helicity. More generally, our approach can be applied to evidence the helicity of any bulk skyrmion phase. | |
http://hdl.handle.net/10993/41164 | |
10.1103/PhysRevB.97.020401 |
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