ISIS Neutron and Muon Source Data Journal

Magnetic ground states of URu2(Si,P)2

Abstract: In URu2Si2, heavy fermion superconductivity emerges out of an unusual "hidden order" (HO) phase. This contradicts the paradigm that unconventional superconductivity occurs in "domes" around quantum critical points (rather than within another ordered state). In spite of decades of intense research, the character of the HO state remains controversial. We have synthesized a new series URu2(Si,P)2 in which we electron-dope the ligand sites. In contrast to other "tuning studies", this path yields very high quality single crystals and does not require a pressure cell. We find a complex phase diagram, including the consecutive suppression of superconductivity and hidden order, followed by the evolution of a new antiferromagnetic phase. We propose to use single crystal magnetic neutron diffraction to shed light on the magnetic ground states of two key specimen in this doping series.

Principal Investigator: Professor Marein Rahn
Experimenter: Mr Lukas Beddrich
Experimenter: Dr Tobias Weber
Local Contact: Dr Pascal Manuel
Experimenter: Dr Ryan Baumbach
Experimenter: Dr Marc Janoschek

DOI: 10.5286/ISIS.E.RB1810441

ISIS Experiment Number: RB1810441

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:
Professor Marein Rahn et al; (2018): Magnetic ground states of URu2(Si,P)2, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1810441

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