Force Constants and Dispersion Relations in GaN

摘要：

We study the lattice dynamics of the wurtzite phase of bulk group-III nitride using the linear chains models. It is shown that the 3D oscillation problem reduces to uncoupled linear chain equations for high symmetry directions. The relation between the 3D and 1D force constants has been investigated. Our study helps to understand better the richness of the linear chain models. We also show how to fit the 3D bulk force constants (and consequently the whole dynamical matrix) from a few points, either experimental or theoretical.

作者: D.G.Santiago-Pérez F.de León-Pérez M.E.Mora-Ramos R.Pérez-(A)lvarez

作者单位: Centro Universitario José Martí Pérez,Avenida de los Mártires 360,Sancti Spiritus,Cuba Departamento de Física de la Materia Condensada,Universidad de Zaragoza,E-50009 Zaragoza,Spain Universidad Autónoma del Estado de Morelos,Ave.Universidad 1001,62209 Cuernavaca,Mexico

会议类型: 国际会议

会议名称: Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)

会议地点: 杭州

会议语种:英文

页码: 1-4

在线出版日期: 2008-03-24（万方平台首次上网日期，不代表论文的发表时间）