论文标题
在HOVO4中可能实现三维量子自旋液体行为
Possible realization of three-dimensional quantum spin liquid behavior in HoVO4
论文作者
论文摘要
对具有异常晶体田地态的几何沮丧的磁系统的研究提供了实现无序系统物理学的新方面的可能性。在这项研究中，我们报告了结构，磁敏感性，热容量测量以及HOVO4上的密度功能理论计算的结果；一种扭曲的HOO8多面体存在的化合物导致多个磁相互作用路径。在直流易感性曲线的温度响应中，观察到的最大值低于10 K，这意味着存在短距离相关性。 AC敏感性排除了任何形式的旋转冷冻的可能性。零场处的温度依赖性热容量测量表明没有远距离顺序，并且存在宽的最大值的宽度最大值左右。残留的热容量表现出具有几乎等于2的指数α的特征性幂律（Tα）行为，与其他3D量子量子式液体系统相似。密度功能理论计算表示存在主要的第二和第三邻居相互作用，这又导致了我们系统的磁挫败感。我们的研究表明，Hovo4可以成为实现3D量子自旋液态的候选者。
The study of geometrically frustrated magnetic systems with unusual crystal field ground states offers a possibility of realizing the new aspects of physics of disordered systems. In this study, we report our results of structural, magnetic susceptibility, heat capacity measurements, along with density functional theory calculations on HoVO4; a compound in which the presence of a distorted kind of HoO8 polyhedral leads to multiple magnetic interaction paths. The observed broad maximum below 10 K in the temperature response of DC susceptibility curves implies the presence of short-range correlations. AC susceptibility rules out the possibility of any kind of spin freezing. Temperature dependent heat capacity measurement at zero field indicate towards the absence of long-range ordering, along with the presence of a broad maximum centered around 14 K. The residual heat capacity exhibits a characteristic power-law (Tα) behavior with the exponent α nearly equal to 2, which is analogous to that observed for other 3D quantum spin liquid systems. The density functional theory calculations signify the presence of dominant second and third nearest neighbor interactions, which in turn lead to magnetic frustration in our system. Our investigations suggest that HoVO4 can be a candidate for realizing a 3D quantum spin liquid state.
