Many-body effects on the electronic and optical properties of Si nanowires from ab-initio approaches

The study of semiconducting nanowires is one of the mostrapidly growing research areas in materials science andnanotechnology, not only from the point of view of the possibleapplications, but also regarding the use of the latest developmentsin the theory. In this paper, we review the general abinitio many-body theory and methods and resume some of ourvery recent results regarding the structural, electronic, andoptical properties of Silicon nanowires (Si-NWs), outliningboth the reached achievements and some of the technicalaspects necessary to obtain them.