Néel-type skyrmion lattice state etending down to T=0 in GaV4Se8

DOI

Magnetic Skyrmions in non-centrosymmetric magnets are topologically stable particle-like objects with remarkable properties that include ultra-low current driven motion, multiferroic coupling and emergent electrodynamics. Recently, the ferroelectric lacunar spinel compound GaV4S8 was found to be a unique host of a new Néel-type Skyrmion lattice (SkL) phase describable as a superposition of spin cycloids. This SkL lies in contrast to the commonly observed Bloch-type SkL in chiral magnets like MnSi described in terms of spin helices. Here we request to use to SANS to prove the existence of Néel-type SkL in the isostructural sister compound GaV4Se8. Startlingly, our magnetization data imply that the SkL is stable down to T=0; this would make GaV4Se8 unique among all bulk skyrmion host materials where the SkL is only realized for finite T always > ~Tc/2. Using SANS to prove microscopically that the SkL is a finite field ground state in GaV4Se8 will contribute important information to the intense debate concerning the mechanisms for bulk SkL stability based on both thermal fluctuations and/or magnetic anisotropy.

Identifier
DOI https://doi.org/10.5291/ILL-DATA.5-42-438
Metadata Access https://data.ill.fr/openaire/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=10.5291/ILL-DATA.5-42-438
Provenance
Creator Loidl, Alois; Szigeti, Bertalan György; Dewhurst, Charles; Tucker, Gregory; Ronnow, Henrik; White, Jonathan; Cubitt, Robert; Bordacs, Sandor; Tsurkan, Vladimir
Publisher Institut Laue-Langevin
Publication Year 2017
Rights OpenAccess; info:eu-repo/semantics/openAccess
OpenAccess true
Representation
Resource Type Dataset
Size 12 GB
Version 1
Discipline Particles, Nuclei and Fields