Spatial modulation of molecular adsorption energies due to indirect interaction

被引：23

作者：

Blankenburg, S. ^{[1
]}

Schmidt, W. G. ^{[1
]}

机构：

[1] Univ Paderborn, Lehrstuhl Theoret Phys, D-33095 Paderborn, Germany

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 23期

关键词：

ab initio calculations; adsorption; copper; fluctuations; organic compounds; surface energy;

D O I：

10.1103/PhysRevB.78.233411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

First-principles calculations are used to rationalize the formation of well-separated (similar to 10 A) molecular rows of phenylglycine upon coadsorption of adenine and phenylglycine on Cu(110) [Q. Chen and N. V. Richardson, Nat. Mater. 2, 324 (2003)]. It is found that the molecular adsorption leads to long-wave oscillations of the charge density at the Cu(110) surface. The experimentally observed indirect interaction between the molecular rows is mediated by these charge fluctuations. Strain effects, in contrast, are of minor importance.

引用

页数：4

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