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.
Low-temperature magnetic properties of the kagome MOF system Cu?(HOTT)?
Abstract: The metal-organic framework (MOF) system Cu?(HOTT)? coordinates Cu²? with HOTT (2,3,7,8,12,13-hexaoxytetraazanaphthotetraphene), a conjugated polyaromatic tetraazanaphthotetraphene ligand, resulting in stacked 2D graphene-like honeycomb grids. The HOTT ligand is in a formal oxidation state of 3, and this generates an S = 1/2 radical state. The HOTT molecules form a honeycomb lattice, while the S = 1/2 Cu²? ions each coordinate to two HOTT ligands, establishing a kagome lattice. Magnetic susceptibility indicates that the radical spins are paired, leading to magnetic properties that reflect one spin 1/2 per Cu on the kagome lattice. This arrangement creates a frustrated quantum magnetic system, making Cu?(HOTT)? a compelling material for further investigation as a candidate quantum spin liquid (QSL). The exchange interactions between kagome sites are estimated to be of order 5 K. We propose to explore the magnetic properties of this compound at low temperatures using ZF and LF muon spin relaxation and compare these results with similar measurements that we made previously on the kagome MOF system Cu?(HOTP)?, whose properties were found to be consistent with a Z?-linear Dirac QSL.
Experimenter: Professor Miguel Clemente León
Experimenter: Mr José Troya Martínez
Experimenter: Professor Eugenio Coronado
Local Contact: Dr Francis Pratt
DOI: 10.5286/ISIS.E.RB2510456
ISIS Experiment Number: RB2510456
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2510456-1 | HIFI | 07 August 2028 | 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],
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For Example:
Professor Miguel Clemente León et al; (2025): Low-temperature magnetic properties of the kagome MOF system Cu?(HOTT)?, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2510456
Data is released under the CC-BY-4.0 license.
