Local measurement of hot-electron phase-coherence at metal surfaces

M. A. Schneider, P. Wahl, L. Vitali, L. Diekhoener, R. Vogelgesang, K. Kern

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

We use scanning tunneling microscopy and spectroscopy to study the energy dependence of hot-electron scattering processes on metal surfaces via the determination of the energy-dependent phase-coherence length. From this an electron lifetime can be determined, which in the case of electrons in the surface state of Ag(111) and in the case of the n=1 image-potential state on Cu(100) shows good agreement with theoretical modeling and other experimental data. The method is based on the quantitative analysis of electron interference patterns. A theoretical analysis shows that the phase-coherence length can be determined in confining nanostructures of a characteristic length scale smaller than the phase-coherence length.

Original languageEnglish
Pages (from-to)443-447
Number of pages5
JournalApplied Physics A
Volume88
Issue number3
DOIs
Publication statusPublished - Aug 2007

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