ISIS Neutron and Muon Source Data Journal
This is a page describing data taken during an experiment at the ISIS Neutron and Muon Source. Information about the ISIS Neutron and Muon Source can be found at https://www.isis.stfc.ac.uk.
Searching for Exotic Quantum Phenomena in the Magnetic Structure of CeAl2 around a Quantum Critical Point
Abstract: Temperature and pressure combined allow the study of a wide range of phase space and can lead to the formation of new quantum phases including unconventional superconducting states, with fascinating scientific and, based on enhanced understanding, technological potential. Our recent low temperature resistivity measurements on high purity samples of the antiferromagnet CeAl2 show evidence for a new, as yet unidentified, phase emerging in the vicinity of a quantum critical point when the antiferromagnetic order is suppressed with pressure. The aim of this proposal is to determine the low temperature, high pressure magnetic structure of CeAl2, in particular focussing on the applied pressure region around the quantum critical point. Unusually in this region we see the transformation from a metallic state to an insulating state in our recent resistivity measurements, and a linear temperature exponent of the resistivity. These results are highly surprising. To date, there is no low temperature, hydrostatic high pressure neutron magnetic structure data on CeAl2. To understand the unusual behaviour as the quantum critical point is approached, we need to determine how the magnetic structure evolves with pressure.
Principal Investigator: Dr Emma Pugh
Experimenter: Professor Jose Luis Garcia-Muņoz
Experimenter: Dr Donna Arnold
Local Contact: Dr Pascal Manuel
Experimenter: Ms Ruyong Li
Experimenter: Dr Noriki Terada
Experimenter: Miss Haritha Sasidharan Vanaja
DOI: 10.5286/ISIS.E.RB2310495
ISIS Experiment Number: RB2310495
| Part DOI | Instrument | Public release date | Download Link |
|---|---|---|---|
| 10.5286/ISIS.E.RB2310495-1 | WISH | 25 April 2027 | Download |
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 Emma Pugh et al; (2024): Searching for Exotic Quantum Phenomena in the Magnetic Structure of CeAl2 around a Quantum Critical Point, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2310495
Data is released under the CC-BY-4.0 license.
