ISIS Neutron and Muon Source Data Journal

Understand the role of dimensionality on heavy fermion physics and quantum criticality in CeCo2Ga8: Inelastic neutron scattering study

Abstract: Dimensionality plays an important role in determining the anomalous non-Fermi liquid properties in heavy fermion systems. So far most heavy fermion compounds are quasi-two-dimensional or three-dimensional. CeCo2Ga8 shows a non-Fermi liquid behaviour in the resistivity and heat capacity at low temperature. Magnetization result suggests the typical behavior for a one-dimensional spin chain from 300 K down to 20 K, and first-principles calculations predict flat Fermi surfaces for the itinerant f-electron bands. These suggest that CeCo2Ga8 is a rare example of the quasi-one-dimensional Kondo lattice. We propose to carry out low temperature inelastic neutron scattering measurements down to 100 mK to study a across over from the non-Fermi liquid to Fermi liquid behaviour in E/T scaling observed at a local quantum critical point on OSIRIS spectrometer.

Principal Investigator: Dr Amitava Bhattacharyya
Local Contact: Dr Franz Demmel
Experimenter: Dr Devashi Adroja
Local Contact: Dr Sanghamitra Mukhopadhyay

DOI: 10.5286/ISIS.E.RB1810461

ISIS Experiment Number: RB1810461

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 Amitava Bhattacharyya et al; (2018): Understand the role of dimensionality on heavy fermion physics and quantum criticality in CeCo2Ga8: Inelastic neutron scattering study, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1810461

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