ISIS Neutron and Muon Source Data Journal

On the inhomogeneous ground state of the two-dimensional frustrated antiferromagnet a-NaMnO2: a single crystal study

Abstract: The layered NaMnO2 is challenging as it is an experimental realization of a two-dimensional spin-2, spatially anisotropic triangular lattice, where the interplay of temperature and strong conflicting interactions, stimulates a remarkable inhomogeneous magnetic ground state. The proposed neutron diffraction experiment will utilize a single crystal specimen that has recently been grown at Warwick to study how the ground state degeneracy of NaMnO2 is lifted. The unusual short-range order that precedes the low-temperature transformation to an antiferromagnetic state and its coexistence with low-dimensional magnetic correlations will be studied to allow a greater insight on the origin of inhomogeneity. Subsequently, its sensitivity to small perturbations that could favor certain states among the degenerate ground-state manifold, will be investigated by a moderate external magnetic field.

Principal Investigator: Dr Alexandros Lappas
Experimenter: Ms Eleni Aza
Experimenter: Dr Monica Ciomaga Hatnean
Experimenter: Professor Geetha Balakrishnan
Local Contact: Dr Fabio Orlandi

DOI: 10.5286/ISIS.E.RB1620054

ISIS Experiment Number: RB1620054

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Alexandros Lappas et al; (2017): On the inhomogeneous ground state of the two-dimensional frustrated antiferromagnet a-NaMnO2: a single crystal study, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1620054

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