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Condensed Matter Physics

Candidate quantum spin ice in the pyrochlorePr2Hf2O7

Profile image of Nicolas GauthierNicolas Gauthier

2016, Physical Review B

https://doi.org/10.1103/PHYSREVB.94.024436
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Abstract

We report the low temperature magnetic properties of the pyrochlore Pr 2 Hf 2 O 7 . Polycrystalline and singlecrystal samples are investigated using time-of-flight neutron spectroscopy and macroscopic measurements, respectively. The crystal-field splitting produces a non-Kramers doublet ground state for Pr 3+ , with Ising-like anisotropy. Below 0.5 K ferromagnetic correlations develop, which suggests that the system enters a spin-ice-like state associated with the metamagnetic behavior observed at μ 0 H c ∼ 2.4 T. In this regime, the development of a discrete inelastic excitation in the neutron spectra indicates the appearance of spin dynamics that are likely related to cooperative quantum fluctuations.

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