论文标题
静水压力下的鼻架旋转/松弛的透视
Perspective on the muon-spin rotation/relaxation under hydrostatic pressure
论文作者
论文摘要
压力以及温度，电场和磁场，改变系统并允许研究物质的基本特性。在施加的压力下，原子间距离收缩，这会改变原子之间的相互作用，并可能导致出现新的（某些外来）物理特性，例如压力诱导的相变（S）；量子临界点，新的结构，磁性和/或超导状态；温度演化的变化和顺序参数的对称性等。MUON-SPIN旋转/松弛/松弛（$μ$ SR）似乎是一种常用的强大技术，允许在极端条件下研究各种材料的磁性和超导反应。目前，在高达$ \ simeq 9 $ t的高磁场下可能会执行$μ$ SR实验，温度降低至$ \ simeq 10-15 $ MK，静水压力高达$ \ simeq 2.8 $ gpa。从下面的角度来看，在压力实验下，对Paul Scherrer Institute（瑞士）现有的高压MUON设施对$μ$ SR的需求进行了讨论，并讨论了通过在压力技术下使用$μ$ SR获得的选定实验结果。
Pressure, together with temperature, electric and magnetic fields, alters the system and allows to investigate the fundamental properties of the matter. Under applied pressure the interatomic distances shrink, which modify interactions between atoms and may lead to appearance of a new (sometime exotic) physical properties as, e.g., pressure induced phase transition(s); quantum critical points(s), new structural, magnetic and/or superconducting states; changes of the temperature evolution and the symmetry of the order parameter(s) etc. The muon-spin rotation/relaxation ($μ$SR) appears to be a commonly used powerful technique allowing to study the magnetic and superconducting responses of various materials under extreme conditions. At present, $μ$SR experiments might be performed under the high magnetic field up to $\simeq 9$ T, temperatures down to $\simeq 10-15$ mK and hydrostatic pressure up to $\simeq 2.8$ GPa. In the following Perspective paper the requirements to the $μ$SR under pressure experiments, the existing high-pressure muon facility at the Paul Scherrer Institute (Switzerland), and selected experimental results obtained by using the $μ$SR under pressure technique are discussed.
