ISIS Neutron and Muon Source Data Journal

RF-muSR detection of a hyperfine-enhanced nuclear moment

Abstract: Some compounds possess an electronic singlet ground state which is non-magnetic. Hyperfine coupling between the nuclear and electronic degrees of freedom can serve to mix a small contribution of an electronic excited state into the ground state, thereby entangling those electronic and nuclear degrees of freedom and resulting in an enhanced nuclear moment. We have evidence that this surprising and counterintuitive effect occurs in the pyrochlore Tm2Ti2O7 and this proposal involves using radiofrequency (RF) excitation to probe this hyperfine-enhanced moment using techniques developed for RF-muSR studies on muon-fluorine coupled systems.

Public release date: 03 March 2029

Principal Investigator: Professor Stephen Blundell
Experimenter: Mr Ewan Thomas
Experimenter: Dr Hank C H Wu
Experimenter: Dr Dharmalingan Prabhakaran
Experimenter: Dr Francis Pratt
Experimenter: Dr Benjamin Huddart
Experimenter: Dr Stephen Cottrell
Local Contact: Dr Alex Louat
Experimenter: Dr Dipranjan Chatterjee

DOI: 10.5286/ISIS.E.RB2520540-1

Parent DOI: 10.5286/ISIS.E.RB2520540

ISIS Experiment Number: RB2520540

Part Number: 1

Date of Experiment: 27 February 2026

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:
Professor Stephen Blundell et al; (2026): RF-muSR detection of a hyperfine-enhanced nuclear moment, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2520540-1

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