Substrate mediated long-range oscillatory interaction between adatoms: Cu/Cu(111)

被引：348
|
作者：
Repp, J
Moresco, F
Meyer, G
Rieder, KH
Hyldgaard, P
Persson, M
机构：
[1] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany
[2] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany
[3] Chalmers Univ Technol, Dept Appl Phys, S-41296 Gothenburg, Sweden
[4] Gothenburg Univ, S-41296 Gothenburg, Sweden
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 14期
关键词：
D O I：
10.1103/PhysRevLett.85.2981
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A quantitative study of the long-range interaction between single copper adatoms on Cu(ll ii mediated by the electrons in the two-dimensional surface-state band is presented. The interaction potential was determined by evaluating the distance distribution of two adatoms from a series of scanning tunneling microscopy images taken at temperatures of 9-21 K. The long-range interaction is oscillatory with a period of half the Fermi wavelength and decays for larger distances d as 1/d(2). Five potential minima were identified for separations of up to 70 Angstrom. The interaction significantly changes the growth of Cu/Cu(111) at low temperatures.
引用
收藏
页码：2981 / 2984
页数：4
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