High-frequency dynamics in a molten binary alloy

被引：47

作者：

Alvarez, M

Bermejo, FJ

Verkerk, P

Roessli, B

机构：

[1] CSIC, E-28006 Madrid, Spain

[2] Tech Univ Delft, Inst Interfac Reactor, NL-2629 JB Delft, Netherlands

[3] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.80.2141

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Heavily damped excitations are found in molten Li4Pb by inelastic neutron scattering. The experiment covered a kinematic range which enabled an unambiguous characterization of such excitations by means of the study of the wave vector dependence of their frequencies, lifetimes, and signal amplitudes. It is shown that the excitations being sampled exhibit features which substantially deviate from those expected for the propagation of an acoustic mode (which should involve in-phase atomic displacements).

引用

页码：2141 / 2144

页数：4

共 21 条

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