ISIS Neutron and Muon Source Data Journal

Spinon spectrum determination of a spin 1/2 Heisenberg antiferromagnetic C12D14CuN4O5

Abstract: Entanglement refers to the phenomenon of two quantum mechanical objects correlated with each other at large distances and proposed to affect quantum criticality, the critical point of a quantum phase transition and governed by non-thermal control parameters such as magnetic field H. C12D14CuN4O5, a good representation of a one dimensional spin ½ Heisenberg antiferromagnetic with an exchange coupling constant J/kB ~ 3.2 K, has been shown to be quantum critical with respect to H. Measurement of magnetic susceptibility showed a variation of J/kB across the critical field, and hence, a non-monotonic field variation of entanglement. Such a field dependent variation of J/kB has not been previously observed. We want to investigate the spinon spectrum by inelastic neutron scattering experiments at different temperatures down to 100 mK as well as estimate J/kB at H = 0 using LET spectrometer.

Principal Investigator: Dr Deepshikha Jaiswal Nagar
Local Contact: Dr Victoria Garcia Sakai
Experimenter: Dr Devashi Adroja
Experimenter: Mr George Mathew

DOI: 10.5286/ISIS.E.RB1820078

ISIS Experiment Number: RB1820078

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 Deepshikha Jaiswal Nagar et al; (2019): Spinon spectrum determination of a spin 1/2 Heisenberg antiferromagnetic C12D14CuN4O5, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1820078

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