Abstract
We report on ab initio calculations of structural and electronic properties for rhombohedral 15R SiC within the density-functional theory in the local density approximation. Besides the structural parameters we present the electronic band dispersion along high-symmetry lines of the irreducible part of the Brillouin zone and compare the position of the lowest conduction-band minimum with those of cubic and hexagonal polytypes. Furthermore we derive from the conduction-band dispersion the components of the effective-mass tensor and compare these with experimental data.
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