Structures of GaN(0001)-(2x2), -(4x4), and -(5x5) surface reconstructions

被引：95

作者：

Xue, QK ^{[1
]}

Xue, QZ

Bakhtizin, RZ

Hasegawa, Y

Tsong, IST

Sakurai, T

Ohno, T

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

[2] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China

[3] Natl Res Inst Met, Tsukuba, Ibaraki 3050047, Japan

[4] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.82.3074

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Various reconstructions on the GaN(0001) surface are studied by scanning tunneling microscopy (STM). Based on the comparison between the STM observations and first-principles total-energy calculations, we propose an adatom scheme for the basic 2 x 2 and 4 X 4 structures, and others as well. It is revealed that the 5 X 5 phase consists of a linear chain of unevenly displaced Ga adatoms along the [<11(2)over bar 0>] direction due to lattice relaxation. [S0031-9007(99)08862-6].

引用

页码：3074 / 3077

页数：4

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