Confined Shockley surface states on the (111) facets of gold clusters -: art. no. 166801

被引：39

作者：

Barke, I ^{[1
]}

Hövel, H ^{[1
]}

机构：

[1] Univ Dortmund, D-44221 Dortmund, Germany

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.90.166801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Combining low-temperature scanning tunneling microscopy and spectroscopy with high-resolution ultraviolet photoemission, we have revealed a confined Shockley surface state on the (111) facets of gold clusters with about N=10(4) atoms grown in nanopits on highly oriented graphite. With tunneling spectroscopy, we observed energy dependent nodal patterns in the dI/dV maps, which are in quantitative agreement with the two-dimensional confinement of the surface state within the hexagonal facet area. The results indicate that the lattice of the ionic cores influences the electronic properties of the clusters significantly.

引用

页数：4

共 34 条

[31] Electron confinement in nickel and copper nanostructures on Cu(111) [J].