Temperature and coverage driven condensation of pentacene on the Si(111)-(√3 x √3) R30°-Ag surface

被引：8
|
作者：
Teng, Jing [1 ]
Guo, Jiandong [1 ]
Wu, Kehui [1 ]
Wang, Enge [1 ]
机构：
[1] Chinese Acad Sci, Inst Phys, Beijing 100080, Peoples R China
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2007年 / 19卷 / 35期
关键词：
D O I：
10.1088/0953-8984/19/35/356005
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The adsorption and self-assembly behavior of pentacene molecules on the Si(111)-(root 3 x root 3) R30 degrees-Ag surface has been studied by variable-temperature scanning tunneling microscopy (STM). By cooling the surface from room temperature to 120 K we observed the condensation of a two-dimensional molecular gas phase to a new ordered solid phase (P2). The structure models of this phase and the high-density brick-wall phase (P1) are proposed consistently based on a systematic investigation of the morphology, chirality and domain boundary structures of the two phases. The self-assembly mechanism of pentacene molecules driven by temperature and molecular coverage is discussed.
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页数：9
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