ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Exploring the low energy excitations of the S=1 quasi-1D molecular system Mo3Se7(dmit)3
Abstract: The molecular magnetic system Mo3S7(dmit)3 is a semiconductor with a charge gap of around 100 K and no magnetic transition or spin freezing down to 50 mK. In the crystal structure the molecules form closely coupled triangles and these triangular units are arranged in hexagonal layers. Theoretical studies indicate that each of the triangles has spin 1 and that the in-plane coupling between triangles is very weak compared to the inter-plane coupling of the triangles. The system can thus be viewed as a strong-rung three-leg spin ladder which is expected to behave as a symmetry-protected topological phase with a Haldane spin gap on the order of 1 K. Temperature dependent muSR studies in longitudinal fields up to 2 T have observed a gap feature that closes with field, becoming zero at around 1.2 T. This is consistent with the expectation for such a Haldane spin chain. This study will explore the properties of the isostructural system Mo3Se7(dmit)3 which is also expected to have a Haldane-gapped state at low field, with gap closure at a quantum critical point reached by a field that will be comfortably within the range of the HiFi instrument.
Experimenter: Mr Alberto Hernandez Melian
Local Contact: Dr Francis Pratt
Experimenter: Dr Samuel Manas Valero
Experimenter: Dr Benjamin Huddart
Experimenter: Professor Tom Lancaster
DOI: 10.5286/ISIS.E.RB2310243
ISIS Experiment Number: RB2310243
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2310243-1 | HIFI | 05 March 2027 | Download |
| 10.5286/ISIS.E/ISIS.E.RB2310243-2 | HIFI | 11 October 2027 | Download |
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 Alberto Hernandez Melian et al; (2024): Exploring the low energy excitations of the S=1 quasi-1D molecular system Mo3Se7(dmit)3, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310243
Data is released under the CC-BY-4.0 license.
