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

DOI

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.

Identifier
DOI https://doi.org/10.5286/ISIS.E.90577505
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/90577505
Provenance
Creator Dr Franz Demmel; Dr Amitava Bhattacharyya; Dr Devashi Adroja; Dr Sanghamitra Mukhopadhyay
Publisher ISIS Neutron and Muon Source
Publication Year 2021
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Natural Sciences; Physics
Temporal Coverage Begin 2018-03-12T09:00:00Z
Temporal Coverage End 2018-03-15T09:00:00Z