Document Type

Article

Publication Date

12-15-1989

Journal or Book Title

Physical Review B

Volume

40

Issue

17

First Page

11477

Last Page

11487

DOI

10.1103/PhysRevB.40.11477

Abstract

We present the results of an investigation of Rh films on Ag(100). The films are studied using Auger-electron spectroscopy, low-energy electron diffraction, x-ray photoelectron spectroscopy, ultraviolet photoemission spectroscopy, ion-scattering spectroscopy, and scanning Auger microscopy. Overlayer characteristics are examined at substrate temperatures of 300 and 600 K. We find that the equilibrium configuration is not predicted by any of the three traditional growth modes (Frank–Van der Merwe, Stranski-Krastanov, or Volmer-Weber). Rather, the equilibrium film structure is that of a Ag-Rh-Ag sandwich, most probably flat. Formation of the sandwich is thermodynamically driven by the difference in surface free energies between Ag and Rh, and is kinetically accessible because of the high mobility of the Ag atoms.

Comments

This article is from Physical Review B 40, no. 17 (1989): 11477–11487, doi:10.1103/PhysRevB.40.11477.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

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