论文标题
避免CEZN中的铁磁量子临界点
Avoided ferromagnetic quantum critical point in CeZn
论文作者
论文摘要
立方CEZN在压力下显示了结构相变，它将基态从抗铁磁（AFM）状态变为铁磁（FM）状态。为了研究FM状态如何在量子相变终止，我们测量了单晶CEZN的压力下的电阻率。向FM状态的过渡温度随着压力的增加而单调降低，伴随着明显的近藤效应，但是在有序的相位终止之前发生了场响应的急剧变化。该结果表明，FM量子临界点可以通过类似AFM状态的状态避免。
Cubic CeZn shows a structural phase transition under pressure, and it modifies the ground state from an antiferromagnetic (AFM) state to a ferromagnetic (FM) state. To investigate how the FM state terminates at a quantum phase transition, we measured the electrical resistivity under pressure for a single crystal CeZn. The transition temperature into the FM state decreases monotonously with increasing pressure, accompanied by the pronounced Kondo effect, but a drastic change in the field response occurs before the ordered phase terminates. This result suggests that the FM quantum critical point is avoided by the appearance of an AFM-like state.
