论文标题
Mn $ _3 $ p的量子关键点附近的Helimagnetic结构和类似于铁的行为
Helimagnetic Structure and Heavy-Fermion-Like Behavior in the Vicinity of the Quantum Critical Point in Mn$_3$P
论文作者
论文摘要
抗fiferromagnet Mn $ _3 $ p带有Neel温度$ t_n = 30 $ K由三个不等的Mn位点形成的Mn四面体和锯齿形链组成。由于几乎沮丧的晶格和许多短的MN-MN债券，预计交换互动的竞争。在这里，我们研究了磁性结构和物理特性，包括该材料的单晶的压力效应，并揭示了一个复杂但有序的呼壳结构。该材料的巡回特征很强，在压力下很容易抑制具有较小磁矩的有序状态，在$ \ sim1.6 $ gpa的情况下表现出量子临界点。即使在有序状态下，低温区域的不连贯交叉的显着质量重归化，也表征了Mn $ _3 $ p的不寻常的电子状态，这很可能会受到潜在的挫败感效应的影响。
Antiferromagnet Mn$_3$P with Neel temperature $T_N=30$ K is composed of Mn-tetrahedrons and zigzag chains formed by three inequivalent Mn sites. Due to the nearly frustrated lattice with many short Mn-Mn bonds, competition of the exchange interactions is expected. We here investigate the magnetic structure and physical properties including pressure effect in single crystals of this material, and reveal a complex yet well-ordered helimagnetic structure. The itinerant character of this materials is strong, and the ordered state with small magnetic moments is easily suppressed under pressure, exhibiting a quantum critical point at $\sim1.6$ GPa. The remarkable mass renormalization, even in the ordered state, and an incoherent-coherent crossover in the low-temperature region, characterize an unusual electronic state in Mn$_3$P, which is most likely effected by the underlying frustration effect.
