The gradual enrichment of the 6H-SiC (0001) surface with silicon atoms revealed two new reconstructions: a giant (12×12) and a (4×8) reconstruction. From STM images, an atomic model was constructed by introducing a new type of silicon in bridge between Si atoms of the SiC surface. These Si-bridge atoms also allowed to model two other reconstructions observed by other teams.
Giant (12×12) and (4×8) reconstructions of the 6H-SiC(0001) surface obtained by progressive enrichment in Si atoms
David Martrou, Thomas Leoni, Florian Chaumeton, Fabien Castanié, Sébastien Gauthier, and Xavier Bouju
Phys. Rev. B 97, 081302(R) – Published 23 February 2018
David Martrou, CEMES (CNRS)
dmartrou at cemes.fr