J.A. Barker, D. Henderson, et al.
Molecular Physics
Based on first-principles pseudopotential calculations, we analyze the energetics and the evolution of band energies as a function of Ge-Ge interlayer spacings for the (Si)4/(Ge)4 superlattice pseudomorphic to Si(001). It is demonstrated that the recently proposed occurrence of stretched bulklike Ge-Ge bonds is energetically unfavorable, and yields transition energies in disagreement with electroreflectance and photocurrent data. © 1990 The American Physical Society.
J.A. Barker, D. Henderson, et al.
Molecular Physics
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SPIE AeroSense 1997
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