ISIS Neutron and Muon Source Data Journal

Structural analysis of honeycomb ruthenates - the relationship between the dimer formation and layer stacking pattern

Abstract: Honeycomb ruthenates (Ru4+, 4d4) are the potential playground for exotic magnetism associated with strong spin-orbit coupling. However, the real honeycomb ruthenate Li2RuO3 shows dimerization of Ru atoms where spin and orbital degrees of freedom are quenched and spin-orbit coupling does not work. To suppress the dimerization, we employed ion-exchange technique on Li2RuO3 and obtained new materials such as Cu2RuO3 and H-Li2RuO3. Cu2RuO3 does not show dimerization and displays a Van Vleck-like magnetic susceptibility as expected for d4 system with spin-orbit coupling. The proton exchanged H-Li2RuO3 was found to be non-magnetic as in Li2RuO3, suggesting the presence of dimerization. To understand the relationship between the electronic ground state and crystal structure, we will perform structural analyses with high-resolution powder neutron diffractions on the new honeycomb ruthenates.

Principal Investigator: Dr Tomohiro Takayama
Experimenter: Professor Hidenori Takagi
Experimenter: Dr Aleksandra Krajewska
Experimenter: Dr Alexandra Gibbs

DOI: 10.5286/ISIS.E.RB1910256

ISIS Experiment Number: RB1910256

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Tomohiro Takayama et al; (2019): Structural analysis of honeycomb ruthenates - the relationship between the dimer formation and layer stacking pattern, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1910256

Data is released under the CC-BY-4.0 license.