Wave spectra of two-dimensional Yukawa solids and liquids in the presence of a magnetic field

被引：34

作者：

Hou, Lu-Jing ^{[1
]}

Shukla, P. K. ^{[2
]}

Piel, Alexander ^{[1
]}

Miskovic, Z. L. ^{[3
]}

机构：

[1] Univ Kiel, IEAP, D-24098 Kiel, Germany

[2] Ruhr Univ Bochum, Inst Theoret Phys 4, D-44780 Bochum, Germany

[3] Univ Waterloo, Dept Appl Math, Waterloo, ON N2L 3G1, Canada

来源：

PHYSICS OF PLASMAS | 2009年 / 16卷 / 07期

基金：

加拿大自然科学与工程研究理事会;

关键词：

dusty plasmas; phonons; plasma simulation; RPA calculations; DUST LATTICE WAVES; COLLECTIVE MODES; WIGNER CRYSTAL; PLASMA; WAKE;

D O I：

10.1063/1.3184575

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Thermally excited phonon spectra of two-dimensional Yukawa solids and liquids in the presence of an external magnetic field are studied using computer simulations. Special attention is paid to the variation of wave spectra in terms of several key parameters, such as the strength of coupling, the screening parameter, and the intensity of the magnetic field. In addition, comparisons are made with several analytical theories, including random-phase approximation, quasilocalized charge approximation, and harmonic approximation, and the validity of those theories is discussed in the present context.

引用

页数：8

共 50 条

[1]

ALLEN MP, 1989, COMPUTER SIMULATION, pCH9

[2] SOME STATIC AND DYNAMICAL PROPERTIES OF A 2-DIMENSIONAL WIGNER CRYSTAL [J].