%0 Journal Article %T Ab initio Study of Misfit Dislocations at the SiC/Si(001) Interface %A Giancarlo Cicero %A Laurent Pizzagalli %A Alessandra Catellani %J Physics %D 2007 %I arXiv %R 10.1103/PhysRevLett.89.156101 %X The high lattice mismatched SiC/Si(001) interface was investigated by means of combined classical and ab initio molecular dynamics. Among the several configurations analyzed, a dislocation network pinned at the interface was found to be the most efficient mechanism for strain relief. A detailed description of the dislocation core is given, and the related electronic properties are discussed for the most stable geometry: we found interface states localized in the gap that may be a source of failure of electronic devices. %U http://arxiv.org/abs/0709.1585v1