Abstract
This project is dedicated to the study the optical and electronics properties of semiconductor nanostructures using time resolved spectroscopy technique. Samples with different geometries and composition will be used in the investigation and the search for quantum effects with potential application in devices. The project also includes the collaboration among groups of growth, structural characterization and theoretical calculation, focusing in the studies of spins states confined within these nanostructures. Experimental challenges will be overcome by mounting a unique system built with complementary and compatible parts from different firms that will provide measurements with resolution in the picoseconds range. The system proposed here has cost much less than traditional systems using streak camera. The possibility of integration with other experimental techniques, like application of external magnetic fields, will make this system one of the few able to perform measurements with this degree of resolution. The project has special focus devoted to the study of nanostructures with tridimensional confinement, ring and one-dimensional wire geometries, displaying magnetic and semi-magnetic properties, with possible applications in storage and information transmission on quantum level. National and international partnerships well established by the proponent are fundamental to the development of this project. The complementation of efforts and common interests from different theoretical and experimental areas about this project, will allow a strong consolidation of this research, besides the fact that they compose an interesting proposal of interdisciplinary collaboration among researchers from different Brazilian and foreign institutions. (AU)
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