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cond-mat.mtrl-sci2021★ 13 cited
Giant optical oscillator strengths in perturbed hexagonal germanium
Abderrezak Belabbes, Friedhelm Bechstedt, Silvana Botti
We present ab initio calculations of electronic and optical properties of perturbed hexagonal germanium and demonstrate that it is a superior material for active optoelectronic dev…
cond-mat.mtrl-sci2021
From pseudo-direct hexagonal germanium to direct silicon-germanium alloys
Pedro Borlido, Jens Renè Suckert, Jürgen Furthmüller +3
We present ab initio calculations of the electronic and optical properties of hexagonal SiGe alloys in the lonsdaleite structure. Lattice constants and electronic band structures i…