Optical phonons in GaN

被引：69

作者：

Azuhata, T ^{[1
]}

Matsunaga, T ^{[1
]}

Shimada, K ^{[1
]}

Yoshida, K ^{[1
]}

Sota, T ^{[1
]}

Suzuki, K ^{[1
]}

Nakamura, S ^{[1
]}

机构：

[1] NICHIA CHEM IND LTD, DEPT RES & DEV, TOKUSHIMA 774, JAPAN

来源：

PHYSICA B-CONDENSED MATTER | 1996年 / 219-20卷

关键词：

D O I：

10.1016/0921-4526(95)00789-X

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on all optically active phonon frequencies of wurtzite GaN determined using Raman, infrared reflection, and attenuated total reflection spectra of a high quality GaN film of 2 mu m thickness. We also show results of lattice dynamical calculations using a rigid ion model. Force constants and charge as fitting parameters were determined so as to reproduce all zone-center phonon frequencies and sound velocities for the high symmetry lines. We present phonon dispersion curves and phonon density of states of wurtzite GaN.

引用

页码：493 / 495

页数：3

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