ISIS Neutron and Muon Source Data Journal

Crystal electric field excitations of pyrochlore quantum antiferromagnet Ce2Sn2O7

Abstract: We have recently discovered an exotic magnetic state developing at subKelvin temperatures in the Ce3+ pyrochlore stannate. The spin system of this compound is characterized by a thermally isolated Jz=3/2 Kramers' doublet at low temperature, providing small effective moments on a pyrochlore lattice. We have observed that these spins are characterized by a strong Ising <111> anisotropy. The system does not order down to the lowest investigated temperature (70 mK). However, it develops a correlated regime for temperatures below 1 K, due to antiferromagnetic interactions one order of magnitude larger than the expected ferromagnetic dipolar couplings. We propose to explicitly measure the CEF scheme of Ce2Sn2O7 by inelastic neutron spectroscopy in order to confirm the picture of a thermally isolated Kramers' doublet at low temperature.

Principal Investigator: Dr Romain SIBILLE
Experimenter: Dr Michel Kenzelmann
Experimenter: Dr Tom Fennell

DOI: 10.5286/ISIS.E.RB1510524

ISIS Experiment Number: RB1510524

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 Romain SIBILLE et al; (2015): Crystal electric field excitations of pyrochlore quantum antiferromagnet Ce2Sn2O7, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1510524

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