ISIS Neutron and Muon Source Data Journal

Magnetically frustrated ground state of an Yb-based semiconductor YbCuS2 with an effective spin-1/2 zigzag chain

Abstract: In the present work, we focus on an Yb-based semiconductor YbCuS2, which has been recently proposed as the first substance exhibiting peculiar quantum phases due to the frustrated Yb zigzag chain. We have studied the magnetic and thermal properties of the semiconducting compound YbCuS2 and revealed a phase transition occurs at To = 0.95 K. The magnetic entropy at To is reduced to 20% of Rlog2, which indicates the magnetic fluctuations above To. Moreover, The peculiar phase diagram suggests manifestation of nontrivial quantum phases arising from the geometrical frustration. The aim is to measure the order parameter and possible magnetic structure using the microscopic measurements such as muon spin relaxation and neutron diffraction. The microscopic observation must be an indication of the magnetic frustration arising from the Yb zigzag chain with the effective spin-1/2.

Principal Investigator: Professor Takahiro Onimaru
Experimenter: Dr Devashi Adroja
Experimenter: Dr Yuka Kusanose
Experimenter: Mr Yudai Ohmagari
Experimenter: Miss Rikako Yamamoto
Local Contact: Dr Dmitry Khalyavin

DOI: 10.5286/ISIS.E.RB2000183

ISIS Experiment Number: RB2000183

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 Takahiro Onimaru et al; (2021): Magnetically frustrated ground state of an Yb-based semiconductor YbCuS2 with an effective spin-1/2 zigzag chain, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB2000183

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