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Seminar-Peter Wahl
18/05/2011 15:00 (Seminarni mistnost budova A) »more info
Our paper published in PRL May 2011
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Colloquium - R. Moeller
28/04/2011 15:00 (Seminarni mistnost budova A) »more info
Colloquium - A. Heinrich
21/03/2011 15:00 (Seminarni mistnost budova A) »more info
Seminar - Petr Klapetek
14/02/2011 14:00 (Zasedaci mistnost budova B) »more info
Seminar - Guy Le Lay
11/02/2011 11:00 (Seminarni mistnost budova A) »more info
Our paper published in PRL Jan 2011
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Seminar András Berkó
15/11/2010 15:00 (Seminarni mistnost budova A) »more info
Seminar Martin Svec
14/11/2010 15:00 (Seminarni mistnost budova A) »more info
2nd QPlus workshop 8/10/10
2nd International QPlus Workshop 8.10.2010 »more info
Seminar Y. J. Dappe 25/5/10
25/5/2010 10:00 (Seminarni mistnost budova A) »more info
Seminar J. Repp 13/4/2010
14/3/2010 15:00 (Seminarni mistnost budova A) »more info
Seminar T. Novotny 2/3/2010
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Seminar R. Martonak 23/2/10
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4/2/10 Colloquium S. Lindsay
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18/1/10 Our work highlighted on Nanotech.org website.
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30/12/09 Our paper about atomic contrast of KPFM published in PRL
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Seminar J.P. Lewis 9/12/09 14:00
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Seminar P. Kocan 25/11/09 15:00
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14.-15.10. 2009 workshop "Simultaneous STM/AFM measurements using tuning fork based sensors"
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Electronic transport on the nanoscale
Rolf Moeller
University of Duisburg Essen, Germany
Scanning multiprobe microscopy is ideally suited to analyze the electronic transport in detail. Two different configurations will be discussed. The lateral transport of electrons may be studied by using two tips to drive a current parallel to the surface. A third tip enables to map the corresponding electrochemical potential. Measurements for a 2D conducting layer will be discussed. To analyze the transport perpendicular to the surface, a thin metallic layer is placed on a semi conducting surface. At the interface a Schottky barrier is formed, which can only be overcome by electrons of sufficient energy. This may be used to split the tunnelling current coming from the tip of the microscope, into the ballistic electrons and the electrons which underwent inelastic scattering processes. The results reveal details of the processes at the interface as well as the ballistic transmission through individual objects. In addition the fluctuations in the tunnelling current due a hindered rotation of a molecule will be discussed.
