Effect of electron doping on the magnetic dynamics of the d^4 Mott insulator Ca2RuO4

DOI

Oxides containing heavy transition-metal ions with four d electrons (d^4) surrounded by an octahedron of oxygen ions have recently been predicted to display a novel type of magnetic order called excitonic magnetism. The conditions required for this state are that the atomic spin-orbit coupling is comparable in strength to the magnetic coupling between neighbouring ions. A recent theoretical study predicted that excitonic magnetism can be found in Ca2RuO4, and that as a result the inter-site interactions are strongly modified by electron doping. We aim to investigate this prediction by comparing the spin dynamics of Ca2RuO4 with that of compounds doped with 5% of La and Pr. The spectrum of spin excitations is sensitive to the sign and magnitude of the inter-site coupling and also to the strength of the spin-orbit coupling, so by identifying changes in these we will test the predictions.

Identifier
DOI https://doi.org/10.5286/ISIS.E.87020880
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/87020880
Provenance
Creator Dr Duc Le; Professor Andrew Boothroyd; Dr Robin Perry; Dr Henrik Jacobsen; Miss Sara Ricco; Mr Davide Pincini; Dr Russell Ewings; Dr Wiktor Bodnar; Dr Kerstin Witte; Dr Sandra Peglow; Mr Jan Wallis; Dr Angela Kruth
Publisher ISIS Neutron and Muon Source
Publication Year 2020
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 2017-05-18T07:00:00Z
Temporal Coverage End 2017-05-21T10:07:18Z