ISIS Neutron and Muon Source Data Journal

Multimagnon and intra-band excitations in the Spin-1 Haldane chain

Abstract: The spin-1 Heisenberg antiferromagnetic (HAFM) chain is a canonical model system in quantum magnetism. The existence of the Haldane gap to the lowest energy excitations has been demonstrated in many experimental realisations. However, the nature of the multimagnon continua is much less clear. We propose to fully measure the one- and multi-magnon spectra as a function of wave vector along the chains and frequency, S(q, w), in the classic S=1 HAFM chain compound, NENP, and compare the results with calculations for the multimagnon continua in the low temperature limit. We then propose to investigate the very recent prediction of thermally induced magnon scattering below the one-magnon dispersion.

Principal Investigator: Dr Toby Perring
Experimenter: Professor Kim Lefmann
Experimenter: Dr Gøran Nilsen
Experimenter: Ms Sonja Holm-Dahlin
Local Contact: Dr David Voneshen

DOI: 10.5286/ISIS.E.RB1820615

ISIS Experiment Number: RB1820615

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 Toby Perring et al; (2018): Multimagnon and intra-band excitations in the Spin-1 Haldane chain, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820615

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