Using visible and x-ray photoelectron spectroscopy, we measured the work function of a Au(111) surface at a well-defined submonolayer coverage of Cs. For a Cs coverage producing a photoemission maximum with a He–Ne laser, the work function is , consistent with previous assumptions used to analyze vibrationally promoted electron emission. A discussion of possible Cs layer structures is also presented.
J. L. LaRue, J. D. White, N. H. Nahler, Z. Liu, S. Sun, P. A. Pianetta, D. J. Auerbach, A. M. Wodtke, The work function of sub-monolayer cesium-covered gold: A photoelectron spectroscopy study, J. Chem. Phys. 2008, 129, 024709, DOI: 10.1063/1.2953712
American Institute of Physics