Search for magnetic fluctuations and spin resonance in FeSe

DOI

Iron selenide is the simplest of the "11" family of Fe-based superconductors. Although FeSe itself has a low Tc of 8.5K, superconductivity can be strongly enhanced by application of pressure, by molecular intercalation, and by deposition as a thin film on SrTiO3. It is of interest to understand FeSe as the parent of these high-Tc derivatives. Our aim is to search for magnetic fluctuations in FeSe. If found, we will investigate how the fluctuations are influenced by the tetragonal-orthorhombic transition at Ts=90K to test a recent theory that the structural transition is driven by an Fe spin-state transition, and we will study whether the low energy magnetic dynamics are influenced by superconductivity, e.g. featuring a spin resonance as found in other Fe-based superconductors. The measurements will be made on high purity polycrystalline samples.

Identifier
DOI https://doi.org/10.5286/ISIS.E.47626700
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/47626700
Provenance
Creator Ms Alice Taylor; Dr Simon Clarke; Professor Andrew Boothroyd; Dr Russell Ewings; Dr Toby Perring; Dr Marein Rahn
Publisher ISIS Neutron and Muon Source
Publication Year 2017
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 2014-03-14T00:00:00Z
Temporal Coverage End 2014-03-17T00:00:00Z