Document Type

Article

Publication Date

5-15-1996

Journal or Book Title

Physical Review B

Volume

53

Issue

20

First Page

13747

Last Page

13752

DOI

10.1103/PhysRevB.53.13747

Abstract

We present results of a scanning tunneling microscope (STM) study of Rh/Ag(100) epitaxy, which shows how the surface rearranges toward the more stable encapsulated structure known to form at higher temperatures. At room temperature, Rh growth proceeds via two competing pathways: (i) thermally activated exchange with Ag surface atoms, which leads to increased coordination of the higher surface free-energy metal Rh by Ag atoms, and (ii) nucleation and growth of mixed Rh/Ag adislands. The Ag-Rh interaction also reduces the surface mobility of Ag, e.g., by local pinning of step edges, accompanied by complex step and surface erosion processes.

Comments

This article is from Physical Review B 53, no. 20 (1996): 13747–13752, doi:10.1103/PhysRevB.53.13747.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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