Confined Friedel oscillations on Au(111) terraces probed by thermovoltage scanning tunneling microscopy

Kai Sotthewes*, Michiel Nijmeijer, Harold J.W. Zandvliet

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

5 Downloads (Pure)

Abstract

The spatial dependence of the local density of states at the Fermi level of a stepped Au(111) surface is studied by thermovoltage scanning tunneling microscopy. The periodicity of the standing waves is not given by λF/2=1.8 nm, as expected based on the band diagram of Au(111), but rather varies between 1.5 and 2.1 nm depending on the exact width of the terraces. This counterintuitive result can be understood by considering the superposition of incident and reflected electron waves, which have a periodicity of λF/2. The change in periodicity is a direct consequence of the decaying nature of the Friedel oscillations.

Original languageEnglish
Article number245311
JournalPhysical Review B
Volume103
Issue number24
DOIs
Publication statusPublished - 29 Jun 2021

Fingerprint

Dive into the research topics of 'Confined Friedel oscillations on Au(111) terraces probed by thermovoltage scanning tunneling microscopy'. Together they form a unique fingerprint.

Cite this