ISIS Neutron and Muon Source Data Journal

Spectral signatures of the magnetically hidden octupolar order in Sr2VO4

Abstract: We propose to study low-energy magnetic excitations associated with the low-temperature ordered phase in polycrystalline Sr2VO4. This layered perovskite compound exhibits an enigmatic two-step phase transition between 122 K (onset) and 97 K (offset), observed in the electronic specific heat, in optical conductivity, and as a clear jump both in the lattice constants and in the magnetic dc susceptibility. However, according to a more recent theory, the low-temperature phase represents an exotic (?pi,pi?) ordering of magnetic octupoles that exhibits no magnetic Bragg peaks, but possesses two characteristic modes of low-energy magnetic excitations that could show up in the inelastic neutron scattering spectra. Here we suggest to look for signatures of these modes.

Principal Investigator: Mr Maksym Surmach
Experimenter: Dr Yuliia Tymoshenko
Experimenter: Dr Alistair Cameron
Local Contact: Dr Toby Perring
Experimenter: Professor Dmytro Inosov
Experimenter: Mr Yevhen Onykiienko

DOI: 10.5286/ISIS.E.RB1610316

ISIS Experiment Number: RB1610316

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:
Mr Maksym Surmach et al; (2016): Spectral signatures of the magnetically hidden octupolar order in Sr2VO4, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1610316

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