Magnetic phase diagram of CeCu2Ge2 above 13T

PID

CeCu2Ge2 (CCG) is the isostructural magnetic counterpart of archetypal unconventional superconductor CeCu2Si2 (CCS). The understanding of the magnetic interactions in CCG promises to grasp the magnetic properties of CCS, and in a further step to magnetically mediated superconductivity. CCG orders AF below 4.2K (AF1) with an (hhl) propagation vector, which is revealed in vertical field along c. At 7.5T, a second AF phase (AF2) develops with a slightly changed propagation vector. Increasing field, all magnetic reflection decrease. Above 12.5T, no magnetic reflection are observed in the (hhl) scattering plane. Therefore, the nature of AF3 is still unknown. We expect the existence of an additional set of reflections (h –h l) having a different field dependence. Indeed, in horizontal field, magnetic reflections increase with field. Using HFM/EXED, we will track the field dependence of these reflections, find the AF2/AF3 phase transition and AF3 magnetic structure.

Identifier
PID https://hdl.handle.net/21.11151/0veo-ieep
Related Identifier IsCompiledBy https://doi.org/10.5442/NI000007
Metadata Access https://data.helmholtz-berlin.de/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:data.helmholtz-berlin.de:inv/8077
Provenance
Instrument HFM/EXED - High Magnetic Field Facility for Neutron Scattering,
Publisher Helmholtz-Zentrum Berlin für Materialien und Energie
Contributor Bertin, Alexandre; Schneidewind, Astrid; Helmholtz-Zentrum Berlin für Materialien und Energie
Publication Year 2024
Rights Creative Commons Zero v1.0 Universal; https://creativecommons.org/publicdomain/zero/1.0/
OpenAccess true
Representation
Resource Type Investigation; Collection
Size 11.11 GiB
Discipline Other
Temporal Coverage Begin 2019-02-11T08:00:00Z
Temporal Coverage End 2019-02-15T20:00:00Z