Excitations in an orbitally dimerized spin S=1 honeycomb antiferromagnet

DOI

Ru4+ ions in Li2RuO3 are on a bipartite lattice and have an orbital degeneracy. The four electrons of the magnetic Ru4+ ions in the threefold-orbitally degenerate t2g manifold are coupled into a spin S= 1 state. An usual phase transition with an orbitally dimerized spin-singlet groud state is observed in Li2RuO3 below 540 K, where the crystal symmetry also exhibits a transition from C2/m monoclinic to P21/m monoclinic, magnetic susceptibility exhibits a sharp drop and the electrical resistivity shows a jump on cooling. We propose to investigate the magnetic excitations of Li2RuO3 using inelastic neutron scattering measurements on MERLIN. We expect to determine the spin gap, to search for excitations from the orbitally dimerized state and to test the models of Ru-Ru coupling and Ru-Ru bonding in Li2RuO3.

Identifier
DOI https://doi.org/10.5286/ISIS.E.24077575
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/24077575
Provenance
Creator Dr Devashi Adroja; Professor Steve Nagler; Dr Pascal Manuel
Publisher ISIS Neutron and Muon Source
Publication Year 2013
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 2009-10-01T09:49:09Z
Temporal Coverage End 2010-05-13T07:56:02Z