Control of chiral magnetic textures in B20 transition metal germanide epilayers

DOI

In order to realise the technological potential of skyrmion-based spintronics, thin film materials with high ordering temperatures and controlled skyrmion size are needed. The canonical B20 FeGe magnetically orders below about 280 K and and has a skyrmion size of ~90 nm, set by the pitch of the spin helix in the helimagnetic ground state. It is known that substituting Mn onto the Fe site (reducing the electron density) causes a change in sign of the DMI at which a divergence of the helix pitch takes place, but doping on the Co site is unexplored. In our previous beamtime we measured two Fe(1-x)Co(x)Ge epilayers, with x = 0.3 and 0.6 and saw tantalising hints of another unexpected divergence at x = 0.6. Here we propose an experiment where we will look more closely in this composition range in order to confirm the presence of this divergence and map its features more clearly.

Identifier
DOI https://doi.org/10.5286/ISIS.E.61783857
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/61783857
Provenance
Creator Mr Charles Spencer; Dr Satoshi Sugimoto; Professor Christopher Marrows; Miss Priyasmita Sinha; Professor Sean Langridge; Dr Timothy Charlton; Dr Christy Kinane
Publisher ISIS Neutron and Muon Source
Publication Year 2018
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Natural Sciences; Physics
Temporal Coverage Begin 2015-06-18T07:00:00Z
Temporal Coverage End 2015-06-23T07:00:00Z