Exploring the metal-insulator transition in Ca2RuO4

DOI

Ca2RuO4 is a fascinating compound, where strong electronic correlations give rise to many unique features. Just above room temperature (~360 K) the system is metallic, below the system is an insulating state accompanied with orbital ordering. A small voltage applied at room temperature induces a current maintained metallic state. We recently found that by limiting the applied current it is possible to suppress the orbital and the magnetic ordering before completing the transition to the metallic state. This electronic phenomenon is probably associated to subtle changes in the arrangement of the oxygen octahedra surrounding the Ru ions, as their arrangement is directly related to the Mottness of the system. We propose to use the high sensitivity of SXD to the oxygen displacement to map the behaviour of the octahedra in this low current-voltage region.

Identifier
DOI https://doi.org/10.5286/ISIS.E.90589630
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/90589630
Provenance
Creator Dr Rosalba Fittipaldi; Dr Matthias Gutmann; Dr Silvia Capelli; Dr Dan Porter; Dr Veronica Granata; Dr Antonio Vecchione; Dr Alessandro Bombardi
Publisher ISIS Neutron and Muon Source
Publication Year 2021
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 2018-03-12T10:00:00Z
Temporal Coverage End 2018-03-19T05:19:21Z