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Title: Observation of a 6x6 superstructure on 6h-SiC (0001) by reflection high energy electron diffraction
Authors: Xie, X.N. 
Loh, K.P. 
Issue Date: 20-Nov-2000
Citation: Xie, X.N.,Loh, K.P. (2000-11-20). Observation of a 6x6 superstructure on 6h-SiC (0001) by reflection high energy electron diffraction. Applied Physics Letters 77 (21) : 3361-3363. ScholarBank@NUS Repository.
Abstract: A 6 X 6 reconstruction consisting of a silicon-rich phase has been observed on 6H-SiC (0001) after annealing a silicon-enriched 3 X 3 6H-SiC (0001) surface at 900°C. Our results show that the 6 X 6 reconstruction obtained is a long-range reconstruction and not a psuedoperiodic structure due to incommensurately adsorbed graphite honeycombs as suggested previously. We propose that the 6 X 6 structure arises from the absence of consecutive tetrahedral clusters in a tetrahedral cluster array with 3 X 3 periodicity. Annealing the 6 X 6 structure further at 1200°C results in a carbon-rich 6 √3 X 6 √3 R 30 structure. © 2000 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
Appears in Collections:Staff Publications

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