ISIS Neutron and Muon Source Data Journal

Magnetic excitations in honeycomb ruthenate Na2RuO3

Abstract: Honeycomb magnets with strong spin-orbit coupling (SOC) are expect to produce exotic magnetic ground states as exemplified by d5 iridates with Jeff = 1/2 state. In d4 case, SOC produces Jeff = 0 states which may interact magnetically via excited Jeff = 1 states. Unconventional magnetic ground states, like spin-liquids, are predicted when the Jeff = 0 states are placed on a honeycomb lattice. We focused on honeycomb ruthenate Na2RuO3 as a possible Jeff = 0 system. In contrast to the previous report, our Na2RuO3 sample, prepared with special care about air-sensitivity, did not show magnetic order down to 2 K, and spin-liquid-like behaviour was seen. There are several scenarios for the nonmagnetic behaviour, such as Jeff = 0 singlet or J1-J2 frustration. In order to reveal the origin of nonmagnetic state, we propose to perform inelastic neutron scattering experiments at MARI and LET.

Principal Investigator: Dr Tomohiro Takayama
Experimenter: Miss Amrutha Mukundan
Experimenter: Dr Aleksandra Krajewska
Experimenter: Professor Hidenori Takagi
Local Contact: Dr Duc Le
Experimenter: Dr Alexandra Gibbs

DOI: 10.5286/ISIS.E.RB1820380

ISIS Experiment Number: RB1820380

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): Magnetic excitations in honeycomb ruthenate Na2RuO3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820380

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