Elastic study of electric quadrupolar correlation in the paramagnetic state of the frustrated quantum magnet Tb2+δTi2-δO7
Elastic study of electric quadrupolar correlation in the paramagnetic state of the frustrated quantum magnet Tb2+δTi2-δO7
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受挫量子磁体Tb2+δTi2-δO7顺磁态电四极关联的弹性研究
DOI：
10.1103/physrevb.105.094414
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发表时间：
2022
影响因子：
3.7
通讯作者：
Onose Y.
中科院分区：
文献类型：
--
作者：
Nii Y.;Hirokane Y.;Nakamura S.;Kabeya N.;Kimura S.;Tomioka Y.;Nojima T.;Onose Y.
本文用超声和磁致伸缩测量方法研究了受抑量子磁场中的电四极态。单晶在0.4 K附近表现出弹性异常，表现出长程四极有序。通过研究磁弹性响应的各向异性，我们发现了一个交叉温度的强关联的四极状态，低于该温度的弹性常数和磁致伸缩的实验数据变得定性地不同于他们的计算基于单离子模型。我们认为四极关联的起始温度相对于转变温度较高是由于几何阻挫效应，这种关联态似乎是顺磁态的异常性质的原因。
The electric quadrupolar state in the frustrated quantum magnethas been studied by means of ultrasonic and magnetostriction measurements. A single crystal showed an elastic anomaly around 0.4 K, manifesting a long-range quadrupole ordering. By investigating the anisotropy of the magnetoelastic responses, we found a crossover temperature for the strongly correlated quadrupole state, below which the experimental data of the elastic constant and magnetostriction become qualitatively different from their calculations based on a single-ion model. We suppose that relatively high onset temperature of the quadrupole correlation compared with the transition temperature is ascribed to the geometrical frustration effect, and this correlated state seems to be responsible for the unusual properties in the paramagnetic state of.