ISIS Neutron and Muon Source Data Journal

Quantum spin liquid in the triangular antiferromagnet NdTa7O19

Abstract: A spin-liquid state was predicted for Ising triangular antiferromagnet already in 1950, but never confirmed experimentally. Several complementary experiments that we have undertaken on a novel triangular antiferromagnet NdTa7O19 suggest that it might be the first to realize this enigmatic state. Our previous INS study (RB 1920405) has revealed that its crystal-electric-field ground-state Kramers? doublet is characterized by highly anisotropic Ising exchange interactions between effective spin-1/2 degrees of freedom, while our muSR study (RB 1910518), suggests a quantum-disordered ground state with low-frequency excitations that are found to persist down to at least 66 mK. This work was submitted to Nature Materials, where one of the Reviewers demands additional confirmation by a neutron diffraction at millikelvin temperatures. We therefore ask for rapid access to the WISH instrument.

Principal Investigator: Dr Matej Pregelj
Local Contact: Dr Pascal Manuel
Experimenter: Dr Panchanana Khuntia
Experimenter: Dr Andrej Zorko
Experimenter: Dr Tina Arh

DOI: 10.5286/ISIS.E.RB2000222

ISIS Experiment Number: RB2000222

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 Matej Pregelj et al; (2021): Quantum spin liquid in the triangular antiferromagnet NdTa7O19, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2000222

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