Orientationally ordered (7x7) superstructure of C60 on au(111)

被引：105

作者：

Schull, G. ^{[1
]}

Berndt, R. ^{[1
]}

机构：

[1] Univ Kiel, Inst Expt & Angew Phys, D-24098 Kiel, Germany

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.99.226105

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Long range orientational order within C(60) monolayers on Au(111) is observed with low-temperature scanning tunneling microscopy. A unit cell comprised of 49 molecules which adopt 11 different orientations is found. It can be divided in a faulted and an unfaulted half similar to the (7x7) reconstruction of Si(111). A model is proposed which shows how, through a Moire-like effect, the substrate induces minute changes in the orientation of the C(60) molecules. Intermolecular interactions are shown to play a major role in stabilizing the superlattice.

引用

页数：4

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