Partially auxetic behavior in fcc crystals of hard-core repulsive Yukawa particles

被引：25
|
作者：
Tretiakov, Konstantin V. [1 ]
Wojciechowski, Krzysztof W. [1 ]
机构：
[1] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2014年 / 251卷 / 02期
关键词：
auxetic; elasticity; hard-core repulsive Yukawa model; negative Poisson's ratio; NEGATIVE POISSON RATIO; STATISTICAL ENSEMBLES; MOLECULAR-DYNAMICS; POLYMERS;
D O I：
10.1002/pssb.201384244
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Elastic properties of the face centered cubic (fcc) phase of particles, interacting through hard-core repulsive Yukawa potential are determined by Monte Carlo (MC) simulations in the NpT ensemble with variable shape of the periodic box. The effects of the Debye screening length (-1) and contact value of the potential (epsilon) on elastic properties of the system are studied. It is found that the hard-core repulsive Yukawa system is partially auxetic. The Poisson's ratio of the system in the [110][1 (1) over bar0] direction is negative and decreases with increasing the Debye screening length. [GRAPHICS] Poisson's ratio of the hard-core repulsive Yukawa system measured in the [110][1 (1) over bar0] directions at beta epsilon = 39 versus density. (C) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：383 / 387
页数：5
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