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Correlation effects in metastable (Ga As)1−x Ge2x alloys

✍ Scribed by Belita Koiller; Maria A. Davidovich; Roberto Osório

Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
290 KB
Volume
55
Category
Article
ISSN
0038-1098

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Impact of short-range order and clusteri
Impact of short-range order and clusterization on the bandgap bowing: First-principles calculations on the electronic properties of metastable (GaAs)1–x(Ge2)x alloys
✍ H. Kawai; G. Giorgi; K. Yamashita 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 595 KB

## Abstract The large, negative, and asymmetric bandgap bowing in (GaAs)~1–__x__~(Ge~2~)~__x__~ alloys is investigated as function of Ge concentration, via the combination of density functional theory and __GW__~0~ approach. We revealed that the large negative character of the gap bowing is due to