ELECTRONIC-STRUCTURES AND STABILITY OF SI-60 AND C-60-AT-SI-60 CLUSTERS

The electronic structure and stability of a fullerenelike Si-60 cluster have been studied by the density functional theory with the local density approximation. Our results suggest that the icosahedral structure of Si-60 is an energy minimum, and the electronic structure near the Fermi level is similar to that of a C-60 duster. We have found that the C-60 cluster is a good candidate to stabilize the Si-60 cluster.