Pinch point and half-moon features of dynamical spin ice and Kagome ice phases of Nd2Hf2O7.
We plan to investigate the spin ice and kagome ice dynamics of the octupolar-dipolar rare earth pyrochlore Nd2Hf2O7 using the IN5 spectrometer. The formation of alternating stacking of Kagome and triangular layers is expected in an applied magnetic field along the (1,1,1) direction where the spins in the triangular layers are polarized in the field direction and thus decoupled magnetically, while the spins in the kagome layers form Kagome ice. A set of a pinch points and a half-moons for each of the phases is expected. The kagome ice features appear at finite field and become stronger with increasing field while the spin ice features become relatively weaker. The observation of half-moon scattering will be particularly interesting – these recently proposed features arise from dispersive modes with an opposite intensity distribution to the pinch points. Our results will be compared to our calculations based on our previously extracted Hamiltonian.
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SAMARTZIS Alexandros; Bella Lake; OLLIVIER Jacques and XU Jianhui. (2019). Pinch point and half-moon features of dynamical spin ice and Kagome ice phases of Nd2Hf2O7.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-05-732
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