All Physics Faculty Publications
Document Type
Article
Journal/Book Title/Conference
Physical Review B
Volume
49
Issue
3
Publication Date
1-15-1994
First Page
2277
Last Page
2280
Abstract
The phonon widths of outermost core-electron photoemission spectra from (110)-oriented overlayers of Na, K, and Rb metals show the expected Debye behavior for the bulk atoms, but significant deviations for the surface atoms. The data indicate a softening of the surface vibrational mode above 200 K. This effect, which is weak in Na but strong in K and Rb, demonstrates that the vibrational mode normal to the surface is anharmonic.
Recommended Citation
"Anharmonic Surface Vibrations in Photoemission from Alkali Metals," G. K. Wertheim, D. M. Riffe, and P. H. Citrin, Phys. Rev. B 49, 2277 (1994).
Comments
Published by American Physical Society in Physical Review B. Publisher PDF is available for download through link above.