Abstract
Si SiGe superlattices gained technical and scientific importance because of possible integration with conventional integrated circuits, strain induced properties, supercritical pseudomorphic growth, and predicted indirect/direct band gap transitions. We report here mainly on adjustment of strain in the superlattice and on strain influenced electronic band ordering. This results in type II band ordering of symmetrically strained superlattices, and two-dimensional electron gas formation in the wide gap material silicon.
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