Coverage Dependence of K adsorption on Si(100)—2× 1 by Core-Level Photoemission

Authors

D. Mark Riffe, Utah State UniversityFollow
G. K. Wertheim
P. H. Citrin
J. E. Rowe

Document Type

Article

Journal/Book Title/Conference

Physical Review B

Volume

45

Publication Date

2-15-1992

First Page

3532

Last Page

3537

Abstract

Using core-level photoemission, a coverage-dependent transition in the adsorption of K on Si(100)2×1 is observed. Below ∼0.25 monolayers, a single adsorption is occupied, the asymmetry of the Si-dimer reconstruction is enhanced, and no more than ∼0.05e is transferred from K to Si. Above this coverage, multiple sites are occupied, the dimer configuration becomes more symmetric, and the K overlayer becomes increasingly metallic. These findings resolve a number of conflicting studies of this system.

Comments

Published by American Physical Society in Physical Review B. Publisher PDF is available for download through link above.

Recommended Citation

"Coverage Dependence of K adsorption on Si(100)—2× 1 by Core-Level Photoemission," D. M. Riffe, G. K. Wertheim, P. H. Citrin, and J. E. Rowe, Phys. Rev. B 45, 3532 (1992).