Local transport gap in C60 nanochains on a pentacene template

被引：24

作者：

Dougherty, D. B. ^{[1
]}

Jin, W. ^{[2
,3
]}

Cullen, W. G. ^{[3
,4
]}

Dutton, G. ^{[2
,3
]}

Reutt-Robey, J. E. ^{[2
,3
]}

Robey, S. W. ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA

[2] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

[3] Univ Maryland, Mat Res Sci & Engn Ctr, College Pk, MD 20742 USA

[4] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW B | 2008年 / 77卷 / 07期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.77.073414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The adsorption of C(60) on a bilayer film of pentacene on Ag(111) is studied with scanning tunneling microscopy and spectroscopy. At low coverage, C(60) molecules form extended linear structures due to the templating effect of the pentacene bilayer. The C(60) molecules in the chains adsorb at bridge sites between two neighboring pentacene molecules. The transport gap of the chain structures is measured to be 4.5 +/- 0.2 eV using constant-current distance-voltage spectroscopy. The magnitude of the gap is correlated with the uniquely low coordination of the linear fullerene structures, which leads to a reduced total polarization contribution compared to bulk C(60).

引用

页数：4

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