Document Type

Article

Publication Version

Published Version

Publication Date

12-2014

Journal or Book Title

Physical Review Letters

Volume

113

Issue

23

First Page

236101-1

Last Page

236101-5

DOI

10.1103/PhysRevLett.113.236101

Abstract

Classically, the onset of nucleation is defined in terms of a critical cluster of the condensed phase, which forms from the gradual aggregation of randomly diffusing adatoms. Experiments in Pb/Si(111) at low temperature have discovered a dramatically different type of nucleation, with perfect crystalline islands emerging “explosively” out of the compressed wetting layer after a critical coverage Θc ¼ 1.22 ML is reached. The unexpectedly high island growth rates, the directional correlations in the growth of neighboring islands and the persistence in time of where mass is added in individual islands, suggest that nucleation is a result of the highly coherent motion of the wetting layer, over mesoscopic distances.

Comments

This article is from Physical Review Letters 113 (2014): 236101, doi: 10.1103/PhysRevLett.113.236101. Posted with permission.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

Share

COinS