Elementary structural building blocks encountered in silicon surface   reconstructions
  Driven by the reduction of dangling bonds and the minimization of surface stress, reconstruction of silicon surfaces leads to a striking diversity of outcomes. Despite this variety even very elaborate structures are generally comprised of a small number of structural building blocks. We here identify important elementary building blocks and discuss their integration into the structural models as well as their impact on the electronic structure of the surface. 
Corsin Battaglia, Katalin Gaal-Nagy, Claude Monney, Clement Didiot,   Eike Fabian Schwier, Michael Gunnar Garnier, Giovanni ...