Phonons and related crystal properties in indium phosphide under pressure

被引：75

作者：

Bouarissa, Nadir ^{[1
]}

机构：

[1] King Khalid Univ, Fac Sci, Sci & Technol Unit, Dept Phys, Abha, Saudi Arabia

来源：

PHYSICA B-CONDENSED MATTER | 2011年 / 406卷 / 13期

关键词：

Phonon frequencies; Polarons in lattices; Collective effects; Pressure; InP; DIAMOND ANVIL CELL; III-V; COMPOUND SEMICONDUCTORS; TEMPERATURE-DEPENDENCE; HYDROSTATIC-PRESSURE; DEVICE APPLICATIONS; REFRACTIVE-INDEXES; MOLECULAR-DYNAMICS; OPTICAL-PROPERTIES; EFFECTIVE CHARGES;

D O I：

10.1016/j.physb.2011.03.073

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Based on the pseudopotential approach, the lattice vibration and polaron properties in InP under pressure up to 8 GPa have been investigated. At zero pressure, our calculated values for all features of interest are in reasonable agreement with data available in literature. Upon compression, the optical phonon modes at Gamma point in the Brillouin zone are shifted towards high energies and their frequencies display a blueshift with rising pressure. The splitting of the longitudinal and transverse optical phonons narrows under pressure, indicating thus a decrease of the ionicity of InP crystal with pressure. It is observed that all physical quantities being studied in this contribution behave monotonically upon compression. To the best of the author's knowledge, the pressure dependence of the polaron properties for InP in the present study is reported for the first time. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2583 / 2587

页数：5

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