AB-INITIO CALCULATIONS OF THE DYNAMIC-RESPONSE OF BERYLLIUM

被引：31

作者：

MADDOCKS, NE

GODBY, RW

NEEDS, RJ

机构：

[1] Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, Madingley Road

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.49.8502

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present results from ab initio calculations of the full inverse dielectric matrix of beryllium, from which we obtain the dynamic scattering cross section. This is shown to be in excellent agreement with recent inelastic x-ray-scattering experiments, both in overall shape and in precise details of the fine structure. As the calculations have been performed entirely within the random-phase approximation, this presents conclusive evidence that band-structure effects are responsible for the observed structure.

引用

页码：8502 / 8505

页数：4

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