ISIS Neutron and Muon Source Data Journal

Interplay of alternation and further neighbor interactions in S-1/2 spin chain Ca2CuAl4O8

Abstract: Spin chains provide a testing ground for concepts in quantum magnetism. No long-range magnetic order is expected, while gapless fractional spinons excitations are predicted for spin-1/2 ions. In the case where the interactions alternate along a spin-1/2 chain the alternation confines the spinons resulting in gapped magnons. The introduction of second neighbor interactions provides another way to modify spin chains. Antiferromagnetic second neighbor interactions compete with the first neighbour interactions and exotic phases are expected such as spin-multipolar phases and nematic states in high magnetic field. Here we propose to investigate a new compound that combines alternating ferromagnetic ? antiferromagnetic first neighbor interactions with stronger antiferromagnetic second neighbor interactions and is a candidate compound for nematic order in a magnetic field.

Principal Investigator: Dr Alysia Lake
Local Contact: Dr Tatiana Guidi
Experimenter: Mr Konrad Puzniak

DOI: 10.5286/ISIS.E.RB2010137

ISIS Experiment Number: RB2010137

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 Alysia Lake et al; (2020): Interplay of alternation and further neighbor interactions in S-1/2 spin chain Ca2CuAl4O8, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010137

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