Muon sites in PbF 2 and YF 3 : Decohering environments and the role of anion Frenkel defects
Muon sites in PbF 2 and YF 3 : Decohering environments and the role of anion Frenkel defects
复制标题
PbF 2 和 YF 3 中的 μ 子位点：退相干环境和阴离子 Frenkel 缺陷的作用
DOI：
10.1103/physrevb.104.l220409
复制
发表时间：
2021
影响因子：
3.7
通讯作者：
Wilkinson J
中科院分区：
文献类型：
--
作者：
Wilkinson J
注入离子氟化物的μ子通常会导致所谓的F-F状态，其中μ子自旋的时间演化包含有关μ子位置的几何形状和性质的信息。离μ子比两个最近邻氟离子更远的原子核导致F-F系统的退相干，这可以产生关于μ子状态的额外定量信息。我们演示了如何将这一想法可以应用到离子fluidesand内的μ子网站的确定，其中包含在不同的晶体学环境中的氟离子。我们的结果可以用来区分不同的晶相，并提供了强有力的证据，阴离子弗伦克尔缺陷的存在。
Muons implanted into ionic fluorides often lead to a so-called F––F state, in which the time evolution of the muon spin contains information about the geometry and nature of the muon site. Nuclei more distant from the muon than the two nearest-neighbor fluorine ions result in decoherence of the F––F system, and this can yield additional quantitative information about the state of the muon. We demonstrate how this idea can be applied to the determination of muon sites within the ionic fluoridesand, which contain fluoride ions in different crystallographic environments. Our results can be used to distinguish between different crystal phases and provide strong evidence for the existence of anion Frenkel defects in.