Oscillatory Electron-Phonon Coupling in Ultra-Thin Silver Films on V(100)

Details Oscillatory Electron-Phonon Coupling in Ultra-Thin Silver Films on V(100) Oscillatory Electron-Phonon Coupling in Ultra-Thin Silver Films on V(100)

2000-07-14

arxiv.org/abs/cond-mat/0007257v1

J. Phys.: Condens. Matter 12, L477 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 3 figures

Scientific paper

10.1088/0953-8984/12/28/105

The temperature dependence of peak widths in high resolution angle-resolved photoelectron spectroscopy from quantum well states in ultra thin Ag films on V(100) has been used to determine the electron-phonon coupling constant, lambda, for films of thickness 1-8 layers. A strong oscillatory variation in coupling strength is observed as a function of film thickness, peaking at a 2 layer film for which lambda~1. A simple theory incorporating interaction of the photo-hole with the thermal vibrations of the potential step at the adlayer-vacuum interface is shown to reproduce the main features of these results.

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