Candidate quantum spin ice in the pyrochlore Pr2Hf2O7

Article

关键词: COULOMB PHASE;    TRANSITION;    OXIDES;    LIQUID;    STATE;    ORDER;    FIELD;   

DOI  :  10.1103/PhysRevB.94.024436

来源: SCIE

【 摘 要 】

We report the low temperature magnetic properties of the pyrochlore Pr2Hf2O7. Polycrystalline and single-crystal 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 Pr3+, 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 mu H-0(c) similar to 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.

【 授权许可】

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