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Lecture Harold J.W. Zandvliet


06 September 2005 FWN-Building 5116.0116, Nijenborgh 4, 9747 AG, Groningen
Speaker: Harold J.W. Zandvliet
Affiliation: Solid-state physics, MESA+ Research Institute for Nanotechnology, University of Twente
Title: Molecular electronics
Date: Tue Sep 6, 2005
Start: 13.00
Location: FWN-Building 5116.0116
Host: B. de Boer
Telephone: +31 50 363 4370


The existence of one-dimensional (1D) electronic states between self-organized Pt nanowires, that are either 1.6 nm or 2.4 nm spaced apart on a Ge(001) surface, is revealed by low-temperature scanning tunneling microscopy. These perfectly straight Pt nanowires act as barriers for a surface state (located just below the Fermi level) of the underlying Pt-modified terrace. The energy positions of the 1D electronic states, observed for both inter-wire distances, are in good agreement with the energy levels of a quantum particle in a well. Spatial maps of the differential conductivity of these 1D electronic states conclusively reveal that these states are exclusively present in the troughs between the Pt nanowires.

In second part of my talk I will show some results we obtained recently in the field of molecular electronics. Among them are inelastic electron tunneling spectroscopy of self-assembled decanethiol monolayers, conductance switching of conjugated molecules inserted into self-assembled monolayers and Coulomb blockade of small Pd clusters deposited on self-assembled monolayers.

Last modified:22 October 2012 2.30 p.m.