Surface morphology on a nanometer scale studied by two-photon photoelectron spectroscopy

Thomas Fauster

doi:10.1117/12.221464

25 September 1995 Surface morphology on a nanometer scale studied by two-photon photoelectron spectroscopy

Thomas Fauster

Proceedings Volume 2547, Laser Techniques for Surface Science II; (1995) https://doi.org/10.1117/12.221464
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The energies of electronic states depend strongly on the size and dimension of the physical system. The high-resolution two-photon photoelectron spectroscopy of weakly-bound image- potential states can be used to monitor the surface morphology of ultrathin metal films. States on terraces of different layer height can be distinguished and the growth mode can be inferred from the presence or absence of several of these states. Lateral localization of the states on small islands leads to an increase of the energy which can be described by the simple model of an electron in a potential well. Distribution of island sizes can be derived on the nanometer scale and compare well with the results of nucleation theory. The high-resolution spectroscopy of image-potential states provides a new tool to study the growth of metal films without disturbing the surface.

Citation Download Citation

Thomas Fauster "Surface morphology on a nanometer scale studied by two-photon photoelectron spectroscopy", Proc. SPIE 2547, Laser Techniques for Surface Science II, (25 September 1995); https://doi.org/10.1117/12.221464

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