Lattice dynamics study of bismuth III-V compounds

被引:35
作者
Belabbes, A. [1 ]
Zaoui, A. [2 ]
Ferhat, M. [1 ]
机构
[1] Univ Sci & Technol Oran, Dept Phys, Oran, Algeria
[2] Univ Sci & Tech Lille Flandres Artois, LML UMR 8107, F-59655 Villeneuve Dascq, France
关键词
D O I
10.1088/0953-8984/20/41/415221
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
We present first-principles calculations of the structural and lattice-dynamical properties for cubic bismuth III-V compounds: BBi, AlBi and GaBi. The ground-state properties, i.e., the lattice constant and the bulk modulus, are calculated using a plane wave pseudopotential method within density functional theory. A linear-response approach to density functional theory is used to derive the phonon frequencies. The effect of pressure on the dynamical charges and the longitudinal optical-transverse optical splitting is also examined.
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页数:4
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