Metamagnetic crossover in the quasikagome Ising Kondo-lattice compound CeIrSn
Metamagnetic crossover in the quasikagome Ising Kondo-lattice compound CeIrSn
复制标题
quasikagome Ising Kondo 晶格化合物 CeIrSn 中的变磁交叉
DOI：
10.1103/physrevb.98.155147
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
T. Sakakibara
中科院分区：
文献类型：
--
作者：
S. Tsuda;C. L. Yang;Y. Shimura;K. Umeo;H. Fukuoka;Y. Yamane;T. Onimaru;T. Takabatake;N. Kikugawa;T. Terashima;H. T. Hirose;S. Uji;S. Kittaka;T. Sakakibara
CeIrSn中的Ce原子在六边形平面内形成准四角晶格。我们的单晶X射线衍射分析证实了在ZrNiAl型结构中没有超结构。受最近对等结构等电子化合物CeRhSn量子临界行为的观察的启发，我们通过测量电阻率、磁化率、磁化强度和比热容来研究CeIrSn单晶样品的低温性质。我们的研究并没有显示出在最低温度下的长程磁有序的证据。实验数据表明，低温下的温度行为具有伊辛特征，和幂律行为。当外加磁场沿轴向沿着时，两者均出现5.5T的变磁异常，与CeRhSn在3.5T时的观测结果相似。我们归因于面内磁场下的变磁交叉缓解的磁挫固有的quasikagome伊辛近藤晶格。
The Ce atoms in CeIrSn form a quasikagome lattice in the hexagonalplane. Our single-crystal x-ray diffraction analysis has confirmed the absence of superstructure in the ZrNiAl-type structure. Motivated by the recent observation of quantum critical behaviors in the isostructural and isoelectronic compound CeRhSn, we have studied low-temperature properties of single-crystalline samples of CeIrSn by measuring the electrical resistivity, magnetic susceptibility, magnetization, and specific heatdown to 0.05 K. Our study does not show evidence of a long-range magnetic ordering down to the lowest temperature. Thedata show an Ising character,, and power-law behaviors at low temperatures:and. When external fieldis applied along theaxis, bothandexhibit metamagnetic anomalies at 5.5 T, which resemble those observed in CeRhSn at 3.5 T. We attribute the metamagnetic crossover under in-plane magnetic fields to the alleviation of magnetic frustration inherent in the quasikagome Ising Kondo lattice.