The research interests are in the area of carbon, semiconductor and metal nanostructures which are investigated using surface science methods, such as scanning probe microscopy (STM and AFM) and photoelectron spectroscopy. Nanostructures of interest are clusters, wires or even more complicated networks, and to study their formation, and the relation between geometric and electronic structure and properties is our main focus. Nanostructure which are limited in their extension in one (surface), two (wire) or three (cluster) dimensions occupy the transition regime between bulk material and isolated atom and the electrical, optical, and magnetic properties change rapidly with size. Despite the considerable volume of work done in this area numerous challenges remain and many questions are still unresolved.
In the last few years nanotechnology has garnered considerable attention, a development which is in part driven by the continuous demand for performance enhancement of electronic devices requiring a size reduction in integrated circuits and increasing data storage capacity. In addition the changes in material properties when entering the nanoscale regime has intrigued researchers for some time and is a very fascinating subject to study.
A possible path to the development of nanoelectronics is the production of simple, nanometer sized functional subunits which can be assembled in numerous different ways much like children’s lego blocks. Molecular electronics, which employs organic macromolecules to perform the individual tasks in an electronic circuit, has already illustrated the feasibility of this concept in some ways. In order to achieve and control the desired functionality of nanoscale units a thorough understanding and control of the material performance on this length scale has to be gained. The functionality will ultimately rely on the control of properties on a molecular level, entering the domain where quantum mechanical effects govern their behavior.
The methods which are employed in our studies are particularly sensitive to the electronic structure which is decisive for many applications but also an expression of the interaction within the system and as such its measurement is an important tool in the understanding of the relation between structure and properties.
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P. Reinke, P. Oelhafen, R. LocherThe polycrystalline diamond (100)/amorphous carbon heterostructure Europhys. Lett. 47, 633 (1999)
P. Reinke, P. OelhafenElectronic properties of diamond/non-diamond heterostructures Phys. Rev. B, 60, 15772 (1999)
P. Reinke, D. Rudmann, P. OelhafenTemperature dependance of the silicon carbide interface formation: a photoelectron spectroscopy study Phys. Rev. B, 61, 16967 (2000)
P. Reinke, P.Oelhafen, S. ChristiansenThree-dimensional structures formed with C60 and amorphous silicon - a feasibility study on the formation of a composite material Surf. Sci. 507-510, 630 (2002)
P. Reinke, S. Eyhusen, M. Büttner, P. OelhafenThe interaction of Fe+ with the C60 surface: a study about the feasiblity of endohedral doping Appl. Phys. Lett. 84, 4373 (2004)
P. Reinke, P. OelhafenSurface modification of C60 by ion irradiation studied with photoelectron spectroscopyJournal of Chem. Phys. 116, 9850 (2002) and Virtual Journal of Nanoscale Science and Technology, 5 /22, (2002)
P.Reinke, H. Feldermann and P. OelhafenC60 bonding to graphite and BN surfaces J. Chem.Phys. 119, 12547 (2003)
M. Töwe, P. Reinke, P. OelhafenReactivity of lithium-containing amorphous carbon films Journal of Nuclear Materials, 290, 153 (2001)
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