ISIS Neutron and Muon Source Data Journal

Nature of non-magnetic ground state of In2Ru2O7 probed by muon spin rotation

Abstract: Complex ruthenium oxides offer a variety of exotic electronic states, such as spin-triplet superconductivity, metal-insulator transition and spin-orbital ordering. We discovered a new pyrochlore ruthenate In2Ru2O7, which was found to show a magnetic transition with a sudden drop of magnetic susceptibility to nearly zero at ~220 K. While the behaviour looks similar to other ruthenates displaying a spin-singlet formation, In2Ru2O7 shows successive phase transitions accompanying a structural change, likely associated with spin and orbital degrees of freedom of Ru 4d electrons. The preliminary muSR data exclude the presence of long-range antiferromagnetic order but the nature of ground state remains elusive. We propose to perform detailed muSR study on In2Ru2O7 on ARGUS in order to disclose the magnetic ground state and spin-dynamics.

Principal Investigator: Dr Tomohiro Takayama
Local Contact: Dr Isao Watanabe
Experimenter: Professor Hidenori Takagi
Experimenter: Dr Aleksandra Krajewska
Experimenter: Dr Dita Puspita Sari
Experimenter: Dr Wan Nurfadhilah Binti Zaharim

DOI: 10.5286/ISIS.E.RB1970108

ISIS Experiment Number: RB1970108

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): Nature of non-magnetic ground state of In2Ru2O7 probed by muon spin rotation, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1970108

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