Anisotropic step-flow growth and island growth of GaN(0001) by molecular beam epitaxy

被引：180
|
作者：
Xie, MH [1 ]
Seutter, SM [1 ]
Zhu, WK [1 ]
Zheng, LX [1 ]
Wu, HS [1 ]
Tong, SY [1 ]
机构：
[1] Univ Hong Kong, Dept Phys, Pokfulam Rd, Hong Kong, Peoples R China
来源：
PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 13期
关键词：
D O I：
10.1103/PhysRevLett.82.2749
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Anisotropic growth is observed for GaN(0001) during molecular beam epitaxy for both the step-flow growth mode and two-dimensional (2D) nucleation growth mode. Using scanning tunneling microscopy, we find that in the step-flow growth mode, growth anisotropy strongly influences the shape of terrace edges, making them strikingly different between hexagonal and cubic films. In the 2D nucleation growth mode, anisotropic growth results in triangularly shaped islands. The importance of understanding growth anisotropy to achieve better grown GaN films is discussed. [S0031-9007(99)08731-1].
引用
收藏
页码：2749 / 2752
页数：4
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