Exploration of Magnetic Excitations at High Energy Transfers in Superconducting Parent Compounds Fe1+xTe

DOI

We propose to study two single crystals with nominal compositions Fe1.07Te and Fe1.18Te using the MAPS spectrometer. The amount of interstitial Fe controls the material¿s structure and magnetism; superconductivity sets in this system when Se or S are substituted in for Te. We would like to study the high-energy excitations in these crystals to complement our low-energy (< 12 meV) neutron data. We will initially use an incident energy of 100 meV and gradually increase the incident energy to track the energy dependence of the excitations up to 200 meV. We will initially align the two samples in the (H0L) scattering plane and direct L along ki to map out the (HK0) dependence with energy. This experiment will hopefully allow us to make a direct comparison to other itinerant systems and also to understand the antiferromagnetic ground state from which superconductivity arises.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24086043
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24086043
Provenance
Creator Dr Chris Stock; Dr Efrain Rodriguez
Publisher ISIS Neutron and Muon Source
Publication Year 2014
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 Photon- and Neutron Geosciences
Temporal Coverage Begin 2011-05-25T08:53:40Z
Temporal Coverage End 2011-06-01T10:04:30Z