Migration of subsurface self-interstitial atoms of the Ge(113) surface and the energy barrier

被引：9
作者：
Gai, Z
Zhao, RG
Yang, WS
机构：
[1] BEIJING UNIV,MESOSCOP PHYS LAB,BEIJING 100871,PEOPLES R CHINA
[2] BEIJING UNIV,DEPT PHYS,BEIJING 100871,PEOPLES R CHINA
来源：
PHYSICAL REVIEW B | 1997年 / 56卷 / 19期
关键词：
D O I：
10.1103/PhysRevB.56.12303
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
It has been pointed out very recently that in each (3 x 2) unit cell of the Ge(113) surface, similar to the Si(113) surface, there is a subsurface self-interstitial atom. In the present paper we have observed with scanning tunneling microscopy that such interstitial atoms of clean and well-annealed Ge(113) surfaces migrate frequently even at room temperature. The energy barrier of the migration has been determined to be 0.93 +/- 0.02 eV from the measured rate of the migration, if the migration is a simple thermally activated process and an attempt frequency of 10(13) Hz is used.
引用
收藏
页码：12303 / 12307
页数：5
相关论文
共 27 条
[1]   BROWNIAN-MOTION OF STEPS ON SI(111) [J].
BARTELT, NC ;
GOLDBERG, JL ;
EINSTEIN, TL ;
WILLIAMS, ED ;
HEYRAUD, JC ;
METOIS, JJ .
PHYSICAL REVIEW B, 1993, 48 (20) :15453-15456
[2]   Dynamics of rough Ge(001) surfaces at low temperatures [J].
Chey, SJ ;
VanNostrand, JE ;
Cahill, DG .
PHYSICAL REVIEW LETTERS, 1996, 76 (21) :3995-3998
[3]   ATOMIC-STRUCTURE OF CLEAN SI(113) SURFACES - THEORY AND EXPERIMENT [J].
DABROWSKI, J ;
MUSSIG, HJ ;
WOLFF, G .
PHYSICAL REVIEW LETTERS, 1994, 73 (12) :1660-1663
[4]   MICROSCOPIC PICTURE OF SI(113) - A NOVEL SURFACE RECONSTRUCTION, THE ORIGIN OF DEFECTS, AND THE PROCESS OF ADSORPTION - THEORETICAL AND EXPERIMENTAL-STUDY [J].
DABROWSKI, J ;
MUSSIG, HJ ;
WOLFF, G .
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 1995, 13 (04) :1597-1601
[5]   A NOVEL SURFACE RECONSTRUCTION - SUBSURFACE INTERSTITIALS STABILIZE SI(113)3X2 [J].
DABROWSKI, J ;
MUSSIG, HJ ;
WOLFF, G .
SURFACE SCIENCE, 1995, 331 :1022-1027
[6]  
DABROWSKI J, 1995, SOLID STATE PHENOMEN, V47, P57
[7]   Adatom diffusion on Ge(111) and the corresponding activation energy barrier [J].
Gai, Z ;
Yu, HB ;
Yang, WS .
PHYSICAL REVIEW B, 1996, 53 (20) :13547-13550
[8]   Application of moire fringes in investigations of subsurface imperfections - A study of dislocations and strain fields under the reconstructed surface layer of Au(001) by scanning tunneling microscopy [J].
Gai, Z ;
He, Y ;
Li, XW ;
Jia, JF ;
Yang, WS .
SURFACE SCIENCE, 1996, 365 (01) :96-102
[9]   Surface structure of the (3x1) and (3x2) reconstructions of Ge(113) [J].
Gai, Z ;
Ji, H ;
Gao, B ;
Zhao, RG ;
Yang, WS .
PHYSICAL REVIEW B, 1996, 54 (12) :8593-8599
[10]  
Gai Zheng, unpublished
123