ISIS Neutron and Muon Source Data Journal

Magnetic and Crystal Structure at High Pressure in Spin Triplet Superconductor UAu2

Abstract: Superconductivity with Cooper pairs containing electrons of equal spin, known as spin-triplet pairing, is a rare phenomenon speculated to exist in a few well known examples. Theoretical predictions suggest it leads to long sought phases of matter, such as chiral superconductivity, where Majorana zero modes suitable for topological computation may exist. We have discovered a new material, UAu2, where previous investigations on WISH saw unusual modulated magnetic order. Using hydrostatic high pressure we have suppressed the magnetic ordering in UAu2 above 3.2 GPa and discovered superconductivity below 1.5 K. Measurements of the critical field suggest the presence of spin-triplet pairing since it exceeds the Pauli limiting field for conventional pairing by over 3 times. The proposal is to look at any changes in magnetic or crystal structure approaching the superconductivity.

Principal Investigator: Dr Christopher O'Neill
Experimenter: Professor Andrew Huxley
Local Contact: Dr Pascal Manuel

DOI: 10.5286/ISIS.E.RB2010411

ISIS Experiment Number: RB2010411

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 Christopher O'Neill et al; (2021): Magnetic and Crystal Structure at High Pressure in Spin Triplet Superconductor UAu2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2010411

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