CeRh6Ge4铁磁量子临界点和奇异金属行为数据集

首次在重费米子化合物CeRh6Ge4中发现了铁磁量子临界点和奇异金属行为的确凿证据。奇异金属行为被发现与非常规超导和反铁磁量子临界密切相关，可能与纠缠量子态有关。但在铁磁体系中，由于缺乏铁磁量子临界点和相应纠缠量子态，人们认为在铁磁体系中不存在奇异金属态。在本文中，我们首次在纯净的近藤化合物CeRh6Ge4中发现了存在铁磁量子临界点和奇异金属行为的证据，压力下上其铁磁序被连续抑制到零度，并在其量子临界定观察到了奇异金属行为，为铁磁量子临界和奇异金属行为的研究打开了新方向。强磁各向异性对这一现象的出现起了关键作用，相关现象可以很好地用自旋三重态共振价键模型所解释。For the first time, conclusive evidence of both ferromagnetic quantum critical points and strange metal behavior has been identified in the heavy fermion compound CeRh6Ge4. Strange metal behavior has been previously found to be closely correlated with unconventional superconductivity and antiferromagnetic quantum criticality, and is hypothesized to be associated with entangled quantum states. However, in ferromagnetic systems, the absence of ferromagnetic quantum critical points and their corresponding entangled quantum states has led to the consensus that strange metallic states do not exist in such systems. In this work, we report the first discovery of evidence for ferromagnetic quantum critical points and strange metal behavior in the pure Kondo compound CeRh6Ge4: under applied pressure, its ferromagnetic order is continuously suppressed to zero temperature, and strange metal behavior is observed at its quantum critical point, thereby opening a new research direction for studies on ferromagnetic quantum criticality and strange metal behavior. Strong magnetic anisotropy plays a critical role in the emergence of this phenomenon, and the relevant experimental observations can be well explained by the spin-triplet resonant valence bond model.

搜集汇总

背景与挑战

背景概述

该数据集首次在重费米子化合物CeRh6Ge4中提供了铁磁量子临界点和奇异金属行为的实验证据。通过压力抑制铁磁序至零度，在量子临界点观测到奇异金属行为，强磁各向异性是这一现象的关键，相关结果可用自旋三重态共振价键模型解释。