Berlin 2008 – scientific programme

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O: Fachverband Oberflächenphysik

O 7: Symposium: Atomic Wires at Surfaces I
(Invited Speakers: Franz Himpsel, Hanno Weitering, Han Woong Yeom)

O 7.3: Talk

Monday, February 25, 2008, 12:00–12:15, HE 101

Spatial Mapping of the Electronic States of a One-Dimensional System — Arie van Houselt, Bene Poelsema, and •Harold Zandvliet — University of Twente, Enschede, The Netherlands

Using low-temperature scanning tunneling microscopy and spectroscopy we have recorded spatial maps of confined electronic states in the troughs between self-organized Pt nanowires on Ge(001) that are spaced 2.4 nm apart. Two subbands are resolved, which correspond to the lowest energy levels of a quantum mechanical particle in a box. As expected, the spatial dI/dV maps exhibit a maximum and a minimum in the middle of the troughs for the n=1 and n=2 states, respectively.