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From Micro- to Nanelectronics

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Marker Lecture by Klaus von Klitzing (Max Planck Institute for Solid State Research)
06 March 2008 from 4:00 PM to 5:00 PM
117 Osmond Laboratory
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It is generally accepted, that the scaling law for the miniaturization of microelectronic devices breaks down if the wave nature and the discrete charge of electrons or tunneling phenomena dominate the electronic properties. These quantum phenomena, which are typical for nanodevices, do not mark the end in the miniaturization of devices but open the possibility to create new devices with new functions where for example the energy quantization of electrons in confined structures, tunnel phenomena through barriers and single electron charging of small islands play an important role. The roadmap in nanoelectronics mentions new devices like resonant tunneling diode, single electron transistor, quantum cellular automata or nanotube devices. Up to now it is not clear, whether the top-down process in miniaturization will be successful in nanoelectronics or whether molecular systems and self-organized structures will be combined with standard CMOS technology. Carbon based materials (nanotubes, buckey balls, graphene) seem to be an interesting building block for applications in nanoelectronics and some new developments in this field will be presented. The main part of the talk will discuss the most important technologies for the preparation of semiconductor nanostructures and the new properties of these devices if quantum phenomena become important.