论文标题
重型费米昂化合物的通用$ t/b $缩放行为
Universal $T/B$ scaling behavior of heavy fermion compounds
论文作者
论文摘要
在我们的迷你审查中，我们解决了$ t/b $缩放量表的表现，其中$ t $和$ t $和$ b $分别是温度和磁场。使用实验数据和Fermion凝结理论，我们表明这种缩放行为是HF化合物，包括HF金属，准晶体和量子自旋液体的典型代表。我们证明，这种缩放行为降低到最低温度和场值，因此$ t/b $在较大范围内变化，前提是HF化合物位于拓扑费用凝结量子量子过渡（FCQPT）附近。由于FCQPT的拓扑特性，有效的质量$ M^*$表现出普遍的行为，并且差异为$ t $为零。 $ m^*$的这种行为具有重要的技术应用。我们还解释了如何从在不同的繁殖化合物上收集的实验数据中提取通用缩放行为。例如，我们考虑HF金属$ \ rm ybco_2ge_4 $，并表明其缩放行为在低温下违反。我们获得的结果表明，与实验事实一致。
In our mini-review, we address manifestations of $T/B$ scaling behavior of heavy-fermion (HF) compounds, where $T$ and $B$ are respectively temperature and magnetic field. Using experimental data and the fermion condensation theory, we show that this scaling behavior is typical of HF compounds including HF metals, quasicrystals, and quantum spin liquids. We demonstrate that such scaling behavior holds down to the lowest temperature and field values, so that $T/B$ varies in a wide range, provided the HF compound is located near the topological fermion condensation quantum phase transition (FCQPT). Due to the topological properties of FCQPT, the effective mass $M^*$ exhibits a universal behavior, and diverges as $T$ goes to zero. Such a behavior of $M^*$ has important technological applications. We also explain how to extract the universal scaling behavior from experimental data collected on different heavy-fermion compounds. As an example, we consider the HF metal $\rm YbCo_2Ge_4$, and show that its scaling behavior is violated at low temperatures. Our results obtained show good agreement with experimental facts.
