论文标题
cote2：具有强旋转的量子临界狄拉克金属
CoTe2: A quantum critical Dirac metal with strong spin fluctuations
论文作者
论文摘要
分隔弱铁磁和顺磁性相的量子临界点会触发许多新现象。动力自旋波动不仅抑制了远距离的阶数，而且还会导致异常运输甚至超导性。将量子临界性与拓扑电子特性相结合带来了罕见且独特的机会。在这里，通过从头算的计算以及磁性，热和传输测量值，我们表明正骨cote $ _2 $接近铁磁性，这似乎被自旋波动所抑制。计算和运输测量结果揭示了节点狄拉克线，使其成为量子关键性和狄拉克拓扑结构的罕见组合。
Quantum critical points separating weak ferromagnetic and paramagnetic phases trigger many novel phenomena. Dynamical spin fluctuations not only suppress the long-range order, but can also lead to unusual transport and even superconductivity. Combining quantum criticality with topological electronic properties presents a rare and unique opportunity. Here, by means of ab initio calculations and magnetic, thermal, and transport measurements, we show that the orthorhombic CoTe$_2$ is close to ferromagnetism, which appears suppressed by spin fluctuations. Calculations and transport measurements reveal nodal Dirac lines, making it a rare combination of proximity to quantum criticality and Dirac topology.
