Determination of the Magnetic Properties of LaFeAs1-xPxO Across Multiple Magnetic Regimes

DOI

LaFeAs1-xPxO has recently been proposed to display unusual properties as a function of P doping with two distinct superconducting (SC) domes separated by a possible AFM phase as suggested by NMR spectroscopy. Initial neutron diffraction data obtained over this composition range (0.4 < x < 0.7) failed to reveal the existence of long range magnetic order between the SC domes. The absence of any obvious physical ground state is difficult to understand especially in a range where superconductivity is clearly suppressed without any apparent driving force! Recently, we performed preliminary proof-of-principle measurements using muon spin rotation at EMU and neutron diffraction (long data collection time) on WISH and successfully proved the existence of at least two magnetic phases at different P contents. Careful measurements are needed on WISH, HRPD and EMU as described in the proposal.

Identifier
DOI https://doi.org/10.5286/ISIS.E.RB1910418-1
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/103213354
Provenance
Creator Dr Pascal Manuel; Dr Omar Chmaissem; Dr Koji Yokoyama; Dr Stephan Rosenkranz; Dr Ray Osborn; Mr Ryan Stadel
Publisher ISIS Neutron and Muon Source
Publication Year 2022
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 2019-06-12T08:30:00Z
Temporal Coverage End 2019-07-05T08:44:26Z