Spin dynamics and magnetism in CeRh6(Ge1-xSix)4

DOI

In Ce-based heavy fermion materials, there is competition between the interactions which lead to a magnetically ordered arrangement of the Ce magnetic moments, and the hybridization between the local moments and conduction electrons, which quenches the local moments and gives rise to a non-magnetic ground state. Sometimes the magnetic transition can be tuned to zero temperature at a quantum critical point (QCP), where unusual properties arise due to quantum fluctuations. CeRh6Ge4 orders magnetically at a low temperature of 2.5 K, but by swapping Si for Ge, the magnetism is suppressed and eventually disappears, likely at a QCP. We propose to examine a series of these doped compounds using muon-spin relaxation so as to characterize the magnetically ordered state, examine how the magnetic state changes as it is suppressed, and to probe the spin fluctuations near the possible QCP.

Identifier
DOI https://doi.org/10.5286/ISIS.E.99690746
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/99690746
Provenance
Creator Dr Aidy Hillier; Dr Michael Smidman; Dr Devashi Adroja; Professor Huiqiu Yuan
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 2018-12-14T09:30:00Z
Temporal Coverage End 2018-12-19T09:05:44Z