PHONON-DISPERSION CURVES IN HIGH-TEMPERATURE SOLIDS FROM LIQUID STRUCTURE FACTORS

被引：16

作者：

FERCONI, M ^{[1
]}

TOSI, MP ^{[1
]}

机构：

[1] INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY

来源：

EUROPHYSICS LETTERS | 1991年 / 14卷 / 08期

关键词：

SOLID-LIQUID TRANSITIONS; PHONONS AND VIBRATIONS IN CRYSTAL LATTICES;

D O I：

10.1209/0295-5075/14/8/013

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The density functional method is used to relate the phonon dispersion curves in a crystal near melting to the structure factor of its liquid near freezing. An illustration is given for potassium, by evaluation of the dispersion curves for all polarizations along several symmetry directions in the Brillouin zone from measured liquid structure factors and comparison with neutron inelastic scattering data. The elastic limit in a monatomic crystal and the plasma frequency limit in the classical Wigner crystal are also briefly discussed.

引用

页码：797 / 802

页数：6

共 16 条

[1]

BADIRKHAN Z, IN PRESS

[2] THE PRESENT STATUS OF THE DENSITY-FUNCTIONAL THEORY OF THE LIQUID-SOLID TRANSITION [J].