ISIS Neutron and Muon Source Data Journal

Low-energy excitations of the quantum critical S=1/2 ladder material Ba2CuTeO6

Abstract: Ba2CuTeO6 is a newly discovered S=1/2 spin ladder material thought to be uniquely close to the theoretically predicted quantum critical point of the coupled two-leg spin ladder system. We have already extensively characterized the material using NMR, magnetic susceptibility, specific heat, torque magnetometry and powder neutron diffraction. Most recently we have performed inelastic neutron scattering measurements using MERLIN and observed key signatures of coupled ladder physics. The MERLIN data investigated the magnetic excitation spectrum above ~2 meV and here we plan to extend the study of the spin excitations with high-resolution measurements at lower energies to test for the presence or absence of a spin gap, as this is a key ingredient required to parameterize how close the system is to the quantum critical point.

Principal Investigator: Dr Alexandra Gibbs
Experimenter: Professor Hidenori Takagi
Local Contact: Dr Franz Demmel
Experimenter: Professor Radu Coldea
Experimenter: Mr David Macdougal

DOI: 10.5286/ISIS.E.RB1620307

ISIS Experiment Number: RB1620307

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 Alexandra Gibbs et al; (2016): Low-energy excitations of the quantum critical S=1/2 ladder material Ba2CuTeO6, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620307

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