Stepped silicon surfaces as templates for one-dimensional nanostructures

被引:35
作者
Himpsel, FJ [1 ]
McChesney, JL
Crain, JN
Kirakosian, A
Pérez-Dieste, V
Abbott, NL
Luk, YY
Nealey, PF
Petrovykh, DY
机构
[1] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[2] Univ Wisconsin, Dept Chem & Biol Engn, Madison, WI 53706 USA
[3] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
[4] USN, Res Lab, Washington, DC 20375 USA
关键词
D O I
10.1021/jp049209f
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
It is shown how atomically precise step arrays can be fabricated on vicinal Si(111). Decoration with metal atoms produces atomic chains that serve as the ultimate nanowires for the study of electrons between one and two dimensions. Chain structures are formed by a large variety of metal atoms with different chemical properties. They range from alkali and alkaline earth metals to noble metals and include transition metals (Pt) and rare earths (Gd, Ho). As a first step toward functionalizing such surfaces, we demonstrate how NEXAFS spectroscopy characterizes organic layers in atom- and orbital-specific fashion, with examples ranging from alkanes with customized end groups to DNA oligonucleotides.
引用
收藏
页码:14484 / 14490
页数:7
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