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Bond-strength inversion in (In,Ga)As semiconductor alloys

Eckner, Stefanie; Ritter, Konrad; Schöppe, Philipp; Haubold, Erik; Eckner, Erich; Rensberg, Jura; Röder, Robert; Ridgway, Mark C.; Schnohr, Claudia


The atomic-scale structure and vibrational properties of semiconductor alloys are determined by the energy required for stretching and bending the individual bonds. Using temperature-dependent extended x-ray absorption fine-structure spectroscopy, we have determined the element-specific In-As and Ga-As effective bond-stretching force constants in (In,Ga)As as a function of the alloy composition. The results reveal a striking inversion of the bond strength where the originally stiffer bond in...[Show more]

CollectionsANU Research Publications
Date published: 2018
Type: Journal article
Source: Physical Review B
DOI: 10.1103/PhysRevB.97.195202
Access Rights: Open Access


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