This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Quantum dynamics in a J_eff=1/2 isotropic triangular-lattice antiferromagnet in applied field
Abstract: This proposal is part of our research programme to explore the spin dynamics of strongly-frustrated quantum magnets. A canonical model is the spin-1/2 triangular antiferromagnet for which theoretical predictions for quantum dynamics effects leading to roton-like soft minima in the dispersion relation and extended scattering continua remain experimentally unexplored. In recent single-crystal measurements on LET we found that Ba3CoSb2O9 is a unique realization of such as system with i) strong renormalization of the spin-wave dispersion relation and zone-boundary soft modes ii) unexpectedly strong continuum scattering at intermediate to high energies. Here we propose to measure the magnetic field and temperature dependence of the dispersions and continuum scattering to compare with theories of quantum dynamics and distinguish between two-magnon and two-spinon continuum scattering.
Principal Investigator: Professor Radu Coldea
Local Contact: Dr Rob Bewley
Experimenter: Miss Stephanie Williams
Experimenter: Mr David Macdougal
DOI: 10.5286/ISIS.E.RB1610390
ISIS Experiment Number: RB1610390
Part DOI | Instrument | Public release date | Download Link |
---|---|---|---|
10.5286/ISIS.E.79113147 | LET | 13 May 2019 | Download |
Publisher: STFC ISIS Neutron and Muon Source
Data format: RAW/Nexus
Select the data format above to find
out more about it.
Data Citation
The recommended format for citing this dataset in a research
publication is as:
[author], [date], [title], [publisher],
[doi]
For Example:
Professor Radu Coldea et al; (2016): Quantum dynamics in a J_eff=1/2 isotropic triangular-lattice antiferromagnet in applied field , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610390
Data is released under the CC-BY-4.0 license.