Static density response function studied by inelastic x-ray scattering: Friedel oscillations in solid and liquid Li
Static density response function studied by inelastic x-ray scattering: Friedel oscillations in solid and liquid Li
复制标题
非弹性 X 射线散射研究静态密度响应函数：固体和液体 Li 中的弗里德尔振荡
DOI：
10.1103/physrevb.102.054208
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发表时间：
2020
影响因子：
3.7
通讯作者：
Inui Masanori
中科院分区：
文献类型：
--
作者：
Hagiya Toru;Matsuda Kazuhiro;Hiraoka Nozomu;Kajihara Yukio;Kimura Koji;Inui Masanori
我们对固体和液体Li进行了非弹性X射线散射实验，以确定静态密度响应函数，其中是波矢。实验确定的允许有意义的比较的响应函数与电子气模型的，表现出在电子气模型中预测的奇异性。计算了点电荷诱导的屏蔽电子密度，发现固体和液体Li中都存在Friedel振荡。此外，我们还发现Friedel振荡在熔化后变得很弱。
We performed inelastic x-ray scattering experiments on solid and liquid Li to determine the static density response function, whereis wave vector. The experimentally determinedallows meaningful comparison of the response function with that of the electron gas model;exhibits thesingularity predicted in the electron gas model. The screening electron density induced by a positive point charge is calculated, and it shows Friedel oscillations both in solid and liquid Li. Moreover, we found that the Friedel oscillations become weak upon melting.