Diffusion of Pt dimers on Pt(111)

被引：24

作者：

Boisvert, G

Lewis, LJ

机构：

[1] Univ Montreal, Dept Phys, Montreal, PQ H3C 3J7, Canada

[2] Univ Montreal, Grp Rech Phys & Technol Couches Minces, GCM, Montreal, PQ H3C 3J7, Canada

[3] Hutchison Ave Software Corp, Montreal, PQ H3A 2H7, Canada

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.59.9846

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the results of a density-functional study of the diffusion of Pt dimers on the (111) surface of Pt. The calculated activation energy of 0.37 eV is in exact agreement with the recent experiment of Kyuno et al. [Surf. Sci. 397, 191 (1998)]. Our calculations establish that the dimers are mobile at temperatures of interest for adatom diffusion, and thus contribute to mass transport. The diffusion path for dimers is found to consist of a sequence of concerted two-atom jumps (plus local reorientations). [S0163-1829(99)06111-1].

引用

页码：9846 / 9849

页数：4

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