Experimental Study of the Dipolar-Octupolar Pyrochlore Quantum Spin Liquid Candidate Ce<sub>2</sub>Hf<sub>2</sub>O<sub>7</sub>
ORAL
Abstract
We present new experimental results on powder and single crystal samples of the new magnetic pyrochlore Ce2Hf2O7. High-energy neutron spectroscopy confirms a dipole-octupole crystal electric field ground state for this rare-earth pyrochlore magnet, consistent with previous measurements and corresponding to two components of pseudospin-1/2 transforming as dipoles and the other component transforming as an octupole. Higher energy-resolution neutron spectroscopy and neutron diffraction show a disordered ground state, which is also consistent with magnetic susceptibility and heat capacity measurements.
*This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). A portion of this research used resources at the High Flux Isotope Reactor and Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory. B.P. and R.S. acknowledge support by the Deutsche Forschungsgemein-schaft under grants SFB 1143 (project-id 247310070) and the cluster of excellence ct.qmat (EXC 2147, project-id 390858490). D.R.Y. acknowledges funding from the Department of Energy award DE-SC0020071. We gratefully acknowledge the Science and Technology Facilities Council (STFC) for access to neutron beamtime at ISIS. Measurements at LANL were supported by the US DOE, Division of Materials Sciences and Engineering.
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Presenters
Evan M Smith
McMaster University
Authors
Evan M Smith
McMaster University
Owen M Benton
Max Planck Institute for the Physics of Complex Systems
Max Planck Institute for the Physics of
Benedikt Placke
Max Planck Institute for the Physics of Complex Systems
Robin Schaefer
Max Planck Institute for the Physics of Complex Systems
