We present a combined experimental and theoretical investigation of the early carbonization stages of the Si(111)-(7x7) surface upon acetylene exposure. Scanning tunneling microscopy images reveal the formation of a (root3xroot3)R30degrees reconstruction. Ab initio calculations allow us to characterize this reconstruction as a carbon-rich silicon phase due to subsurface incorporation of C atoms.
Carbon induced restructuring of the Si(111) surface / Pignedoli, Ca; Catellani, A; Castrucci, P; Sgarlata, A; Scarselli, M; De Crescenzi, M; Bertoni, Carlo Maria. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - STAMPA. - 69:(2004), pp. 113313-1-113313-4. [10.1103/PhysRevB.69.113313]
Carbon induced restructuring of the Si(111) surface
BERTONI, Carlo Maria
2004
Abstract
We present a combined experimental and theoretical investigation of the early carbonization stages of the Si(111)-(7x7) surface upon acetylene exposure. Scanning tunneling microscopy images reveal the formation of a (root3xroot3)R30degrees reconstruction. Ab initio calculations allow us to characterize this reconstruction as a carbon-rich silicon phase due to subsurface incorporation of C atoms.Pubblicazioni consigliate
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