These three intimately related aspects of our work, which cover activities in nano-electronics, nano-magnetism, mesoscopic physics, optical electron spin manipulation in quantum dots, electron transport and magnetization reversal in the nano-scale…, constitute important scientific challenges bearing novel effects. Two axes of research, traversing several research teams, appear clearly in this field. The first axis concerns the quantum transport in low dimensionality systems, from carbon nanotubes to semiconductors quantum wires and dots. These nanostrustures, whose dimensions and characteristics can be largely customized, constitute ideal systems for testing innovative theoretical models, thus offering the possibility of answering timely fundamental questions. The similarities with the properties of one-dimensional organic materials leads to a close collaboration with physicists in that field. The ultra-high vacuum low temperature STM spectroscopy contributes to this cross-fertilization. The second axis consists of the exploration of the optical, electro-optical, magneto-optical and magnetic properties of nanostructures. In general, this axis brings into play a significant effort towards the development of materials and technologies, both for mastering high-mobility heterostructures and for growing high quality quantum dots and magnetic heterostructures.
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