ISIS Neutron and Muon Source Data Journal

Measuring magnetic anisotropy and magnetic excitations in staggered and chiral spin-1 chains

Abstract: We plan to study two spin-1 antiferromagnets, where the Ni(II) ions are connected in (i) a staggered and (ii) chiral-chain structure. Previous studies of similar spin-1/2 Cu(II) systems revealed a host of exotic excitations that map on the soliton and breather modes of the sine-Gordon model of quantum-field-theory. Spin-1 chains, however, are known to differ fundamentally from their spin-1/2 counterparts, and the structure of these materials suggest the presence of an unusual, alternating single-ion anisotropy. We expect that the competition between the alternating anisotropy and antiferromagnetic could give rise to a unique excitation spectrum and promote spin canting, which is conventionally solely driven by the Dzyalonshinskii-Moriya. We propose to use zero-field inelastic neutron scattering, below magnetic ordering temperatures Tc = 2.3 K and Tc = 2.2 K, at LET to quantify the energy scales governing the magnetic properties and map the excitation spectra. The data collected at LET will supplement the magnetic neutron diffraction data collected at WISH and a suite of thermodynamic measurements.

Experimenter: Dr Roger Johnson
Local Contact: Dr Ross Stewart
Experimenter: Dr Paul Goddard
Experimenter: Professor Jamie Manson
Experimenter: Mr Shroya Vaidya

DOI: 10.5286/ISIS.E.RB2310305

ISIS Experiment Number: RB2310305

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 Roger Johnson et al; (2023): Measuring magnetic anisotropy and magnetic excitations in staggered and chiral spin-1 chains, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310305

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