High-frequency elastic moduli of two-dimensional Yukawa fluids and solids

被引：25
作者：
Khrapak, Sergey [1 ,2 ,3 ]
Klumov, Boris [1 ,3 ,4 ]
机构：
[1] Aix Marseille Univ, CNRS, PIIM, F-13397 Marseille, France
[2] Deutsch Zentrum Luft & Raumfahrt DLR, Inst Mat Phys Weltraum, D-82234 Wessling, Germany
[3] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia
[4] Ural Fed Univ, Ekaterinburg 620075, Russia
来源：
PHYSICS OF PLASMAS | 2018年 / 25卷 / 03期
关键词：
TRANSVERSE-WAVES; MONTE-CARLO; CRYSTAL; ENERGY;
D O I：
10.1063/1.5025396
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：
An approach to calculate high-frequency bulk and shear moduli of two-dimensional (2D) weakly screened Yukawa fluids and solids is presented. Elastic moduli are directly related to sound velocities and other important characteristics of the system. In this article, we discuss these relations and present an exemplary calculation of the longitudinal, transverse, and instantaneous sound velocities and derive a differential equation for the Einstein frequency. Simple analytical results presented demonstrate good accuracy when compared with numerical calculations. The obtained results can be particularly useful in the context of 2D colloidal and complex (dusty) plasma monolayers. Published by AIP Publishing.
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页数：6
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