Time-of-flight inelastic neutron scattering investigation of the Quantum Spin Ice and Quantum Kagome Ice phases in Pr2Hf2O7
We have recently reported the low temperature magnetic properties of the pyrochlore Pr2Hf2O7. Polycrystalline and single-crystal samples were investigated using time-of-flight neutron spectroscopy and macroscopic measurements, respectively. The crystal field splitting produces a non-Kramers ground state doublet for Pr3+, with Ising-like anisotropy. Below 0.5 K, the system enters a correlated state with spin-ice like configurations. We have observed the development of elastic magnetic scattering and of a discrete inelastic excitation in the neutron spectra within this regime. We want to characterize the momentum dependence of both contributions using IN5 and a single crystal sample. In addition, the transition at 2.4 T is reminiscent of the kagome ice state observed in classical spin ices for fields applied along the [111] direction. We want to characterize this other phase using the same method.
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Romain Sibille; FENNELL Tom; GAUTHIER Nicolas; KENZELMANN Michel and OLLIVIER Jacques. (2016). Time-of-flight inelastic neutron scattering investigation of the Quantum Spin Ice and Quantum Kagome Ice phases in Pr2Hf2O7. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-05-641
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