Probing dynamics of a phase transition of two-dimensional nano-domains with STM imaging and manipulation

被引：5
|
作者：
Hwang, IS
Chang, SH
Fang, CK
Chen, LJ
Tsong, TT
机构：
[1] Acad Sinica, Inst Phys, Taipei 115, Taiwan
[2] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu, Taiwan
来源：
SURFACE SCIENCE | 2004年 / 572卷 / 01期
关键词：
surface thermodynamics (including phase transitions); scanning tunneling microscopy; silicon; low index single crystal surfaces;
D O I：
10.1016/j.susc.2004.08.025
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A reversible, temperature-driven structural surface phase transition of Pb/Si(111) nano-domains is studied with a variable-temperature scanning tunneling microscope (STM). Finite-size effects of the transition are clearly demonstrated. Most importantly, structural fluctuations in the low-temperature phase can be induced by the direct interaction between the tip atoms and the surface atoms. The structural changes reveal dynamics in the low-temperature phase. Amazingly, the largest size of the domains that can be manipulated decreases with decreasing sample temperature. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：L331 / L337
页数：7
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