| 一种计算半导体力常数的简单途径——对GaAs(111)-2×2表面声子研究的应用 |
| |
| 引用本文： | 林子敬,汪克林.一种计算半导体力常数的简单途径——对GaAs(111)-2×2表面声子研究的应用[J].物理学报,1988,37(12):1932-1939. |
| |
| 作者姓名： | 林子敬 汪克林 |
| |
| 作者单位： | 中国科学技术大学基础物理中心 |
| |
| 摘 要： | 本文利用成键轨道近似简化电子能带结构能量的计算,导出了任意杂化下半导体力常数的解析表达式。通过对一些材料声子色散曲线的计算和实验结果的比较,表明该方法是简单有效的。作者将其应用于GaAs(111)-2×2表面声子的研究,得到了该表面的强局域声子模的色散曲线。
关键词：
|
| 收稿时间： | 3/9/1988 12:00:00 AM |
A SIMPLE APPROACH FOR THE CALCULATION OF FORCE CONSTANTS OF SEMICONDUCTORS——APPLICATION TO THE STUDY OF PHONONS AT THE GaAs(111)-2×2 SURFACE |
| |
| LIN ZI-JING and WANG KE-LIN.A SIMPLE APPROACH FOR THE CALCULATION OF FORCE CONSTANTS OF SEMICONDUCTORS——APPLICATION TO THE STUDY OF PHONONS AT THE GaAs(111)-2×2 SURFACE[J].Acta Physica Sinica,1988,37(12):1932-1939. |
| |
| Authors: | LIN ZI-JING and WANG KE-LIN |
| |
| Abstract: | An analytical expression for the force constants of semiconductors with arbitrary hybridization is derived by using the bond orbital approximation to simplify the calculation of electronic band structure energy of the system. This method is shown to be simple and effective by the comparison between the theoretical calculation and experimental results of phonon dispersion curves of several materials. Applying this method to the study of phonon at GaAs (111)-2×2 sarface, the dispersion curves of phonons that are strongly localized at the surface are obtained. |
| |
| Keywords: | |
|
| 点击此处可从《物理学报》浏览原始摘要信息 |
| 点击此处可从《物理学报》下载免费的PDF全文 |
