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arXiv · 1306.0759

Crystal field states in a Quantum Spin Ice]{Crystal field states of Pr$^{3+}$ in the candidate quantum spin ice Pr$_{2}$Sn$_{2}$O$_{7}$

A. J. Princep·D. Prabhakaran·A. T. Boothroyd·D. T. Adroja
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Abstract

Neutron time-of-flight spectroscopy has been employed to study the crystal-field splitting of Pr$^{3+}$ in the pyrochlore stannate Pr$_{2}$Sn$_{2}$O$_{7}$. The crystal field has been parameterized from a profile fit to the observed neutron spectrum. The single-ion ground state is a well isolated non-Kramers doublet of $Γ_3^+$ symmetry with a large Ising-like anisotropy, $χ_{zz} /χ_\perp \approx 60$ at 10 K, but with a significant admixture of terms $| M_J \neq \pm J >$ which can give rise to quantum zero-point fluctuations. This magnetic state satisfies the requirements for quantum spin ice behavior.

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A. J. Princep, D. Prabhakaran, A. T. Boothroyd, D. T. Adroja. 2013-10-25. Crystal field states in a Quantum Spin Ice]{Crystal field states of Pr$^{3+}$ in the candidate quantum spin ice Pr$_{2}$Sn$_{2}$O$_{7}$. https://doi.org/10.1103/physrevb.88.104421

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