Crystal-field states of Pr3+ in the candidate quantum spin ice Pr2Sn2O7

被引：53
|
作者：
Princep, A. J. [1 ]
Prabhakaran, D. [1 ]
Boothroyd, A. T. [1 ]
机构：
[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England
来源：
PHYSICAL REVIEW B | 2013年 / 88卷 / 10期
基金：
英国工程与自然科学研究理事会;
关键词：
TEMPERATURE MAGNETIC-PROPERTIES; HO2TI2O7;
D O I：
10.1103/PhysRevB.88.104421
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Neutron time-of-flight spectroscopy has been employed to study the crystal-field splitting of Pr3+ in the pyrochlore stannate Pr2Sn2O7. 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 Gamma(+)(3) symmetry with a large Ising-like anisotropy,chi(zz)/chi(perpendicular to) approximate to 60 at 10 K, but with a significant admixture of terms |M-J not equal +/- 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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页数：5
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