TY - JOUR
T1 - Confined Friedel oscillations on Au(111) terraces probed by thermovoltage scanning tunneling microscopy
AU - Sotthewes, Kai
AU - Nijmeijer, Michiel
AU - Zandvliet, Harold J.W.
N1 - Publisher Copyright:
© 2021 American Physical Society.
PY - 2021/6/29
Y1 - 2021/6/29
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85109029566&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.103.245311
DO - 10.1103/PhysRevB.103.245311
M3 - Article
AN - SCOPUS:85109029566
VL - 103
JO - Physical review B: Covering condensed matter and materials physics
JF - Physical review B: Covering condensed matter and materials physics
SN - 2469-9950
IS - 24
M1 - 245311
ER -