NOVEL RECONSTRUCTION MECHANISM FOR DANGLING-BOND MINIMIZATION - COMBINED METHOD SURFACE-STRUCTURE DETERMINATION OF SIC(111)-(3X3)

Authors
STARKE U SCHARDT J BERNHARDT J FRANKE M REUTER K WEDLER H HEINZ K FURTHMULLER J KACKELL P BECHSTEDT F
Citation
U. Starke et al., NOVEL RECONSTRUCTION MECHANISM FOR DANGLING-BOND MINIMIZATION - COMBINED METHOD SURFACE-STRUCTURE DETERMINATION OF SIC(111)-(3X3), Physical review letters, 80(4), 1998, pp. 758-761
Citations number
48
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
80
Issue
4
Year of publication
1998
Pages
758 - 761
Database
ISI
SICI code
0031-9007(1998)80:4<758:NRMFDM>2.0.ZU;2-Q
Abstract
The SiC(111)-(3X3) phase was analyzed by scanning tunneling microscopy (STM), low-energy electron diffraction (LEED) holography, density fun ctional theory (DFT), and conventional LEED. A single adatom per unit cell found in STM acts as a beam splitter for the holographic inversio n of discrete LEED spot intensities. The resulting 3D image guides the detailed analyses by LEED and DFT which find a Si tetramer on a twist ed Si adlayer with cloverlike rings. This twist model with one danglin g bond left per unit cell represents a novel (nXn)-reconstruction mech anism of group-IV (111) surfaces.