Novel Properties at the Quantum Critical Point in Itinerant ElectronMetamagnet

磁量子临界性是凝聚态物理中最有趣的现象之一。为了研究其新性质，我们测定了流动变磁材料UCoAl的磁温-压-磁场相图和量子临界端点（QCEP）。我们在QCEP附近发现了不寻常的电阻率行为，这不能用基于SCR理论的非费米液体状态来解释。

Magnetic quantum criticality is one of the most intriguing phenomena in the condensed matter physics. In order to investigate its novel properties, we determined magnetic temperature-pressure-magnetic field phase diagram and the quantum critical end point (QCEP) of itinerant metamagnetic material UCoAl. We found unusual behavior in the electrical resistivity in the vicinity of the QCEP, which cannot be explained in terms of the non-Fermi liquid regime based on the SCR theory.