ISIS Neutron and Muon Source Data Journal

Tuning confinement potential of spinons in an Ising chain using magnetic fields

Abstract: The Ising chain realises the fundamental paradigm of spin fractionalization, where locally flipping a spin creates two kinks (spinons) that can separate away at no energy cost, very different from conventional three-dimensional ordered magnets where a local spin deviation propagates coherently as a magnon. In a quasi-1D system the mean-field effects of the weak 3D couplings confine the spinons into a rich structure of bound states, analogous to quark confinement into mesons. Here we propose to tune externally the confinement potential between spinons by means on a variable magnetic field along the Ising direction to explore how the bound states in the quasi-1D Ising ferromagnet CoNb2O6 evolve from the limit of very weak confinement (many bound states, energy separation scaling as field to power 2/3) to very strong confinement (only two bound states, energies linear in field).

Principal Investigator: Professor Radu Coldea
Experimenter: Dr Prabhakaran Dharmalingam
Experimenter: Miss Ineke Broeders
Local Contact: Dr Rob Bewley
Experimenter: Mr David Macdougal
Experimenter: Miss Leonie Woodland

DOI: 10.5286/ISIS.E.RB1720444

ISIS Experiment Number: RB1720444

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 Radu Coldea et al; (2018): Tuning confinement potential of spinons in an Ising chain using magnetic fields , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1720444

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