A new structural model for the Si(331)-(12x1) reconstruction
  A new structural model for the Si(331)-(12x1) reconstruction is proposed. Based on scanning tunneling microscopy images of unprecedented resolution, low-energy electron diffraction data, and first-principles total-energy calculations, we demonstrate that the reconstructed Si(331) surface shares the same elementary building blocks as the Si(110)-(16x2) surface, establishing the pentamer as a universal building block for complex silicon surface reconstructions. 
Corsin Battaglia, Katalin Gaal-Nagy, Claude Monney, Clement Didiot,   Eike Fabian Schwier, Michael Gunnar Garnier, Giovanni ...