STACKING TRANSFORMATION FROM HEXAGONAL TO CUBIC SIC INDUCED BY SURFACE RECONSTRUCTION : A SEED FOR HETEROSTRUCTURE GROWTH
作者： U. Starke , J. Schardt , J. Bernhardt , M. Franke , K. Heinz
DOI: 10.1103/PHYSREVLETT.82.2107
关键词: Hexagonal crystal system 、 Surface reconstruction 、 Phase evolution 、 Crystallography 、 Heterojunction 、 Materials science 、 Stacking 、 Phase (matter)
摘要: Promoted by Si enrichment during the formation of reconstructed s p 3 dR30± phase on hexagonal SiC(0001) a cubic stacking sequence develops at surface. The reconstruction is ultimately resolved to consist adatoms in T4 sites as found quantitative LEED crystallography. Prior evolution mesalike structures with various atomic periodicities are observed STM. Smoothening this rough and enriched state provides material for modified which could serve seed preparation SiC polytype heterostructures. [S0031-9007(99)08644-5]
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