SELF-DIFFUSION ON COPPER SURFACES

被引：138

作者：

HANSEN, L

STOLTZE, P

JACOBSEN, KW

NORSKOV, JK

机构：

[1] Laboratory of Applied Physics, Technical University of Denmark

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 12期

关键词：

D O I：

10.1103/PhysRevB.44.6523

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The diffusion paths and activation energies of a Cu adatom on Cu(100), Cu(111), and Cu(110) are studied using the effective-medium theory to calculate the energetics. For the (100) and (110) faces, diffusion via an exchange mechanism is found to be important. The transition state for these paths is stabilized by a direct covalent interaction as proposed by Feibelman. On the (111) face and for diffusion along the close-packed rows on the (110) surface, a simple hopping mechanism is found to be most favorable.

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页码：6523 / 6526

页数：4

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