Document Type

Article

Publication Date

11-7-1994

Journal or Book Title

Physical Review Letters

Volume

73

Issue

19

First Page

2591

Last Page

2594

DOI

10.1103/PhysRevLett.73.2591

Abstract

Scanning tunneling microscopy shows that large two-dimensional Ag clusters on Ag(100) can diffuse. The value of the diffusion coefficient at room temperature is of order 10-17 cm2s-1 and varies little, if at all, with cluster size in the range studied, 100 to 720 atoms per cluster. This weak variation rules out periphery diffusion as the main mechanism of cluster diffusion, suggesting instead two-dimensional evaporation-condensation. This conclusion is compatible with the energetics of atomic-scale events within the cluster and with the dissolution of small clusters observed at low coverages.

Comments

This article is from Physical Review Letters 73, no. 19 (1994): 2591–2594, doi:10.1103/PhysRevLett.73.2591.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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