Journal of Applied Physics · 2000 · 30 citations · 30 references
Natural SciencesMaterials SciencePhysicsCondensed Matter PhysicsSemiconductor MaterialsSolid State PhysicsAlloysElectronic Band StructureSemiconductor PhysicsStructure DeterminationX-ray CrystallographyX-ray DiffractionAlloy SemiconductorsBond LengthsCrystal Structure AnalysisHigh-resolution X-ray DiffractionLocal Electronic StructureLocal StructurePair Distribution Function AnalysisX-ray Diffraction Analysis
High resolution total and indium differential atomic pair distribution functions (PDFs) for In0.5Ga0.5As alloys have been obtained by high energy and anomalous x-ray diffraction experiments, respectively. The first peak in the total PDF is resolved as a doublet due to the presence of two distinct bond lengths, In–As and Ga–As. The In differential PDF, which involves only atomic pairs containing In, yields chemical specific information and helps ease the structure data interpretation. Both PDFs have been fit with structure models and the way in that the underlying cubic zinc-blende lattice of In0.5Ga0.5As semiconductor alloy distorts locally to accommodate the distinct In–As and Ga–As bond lengths present has been quantified.
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Special quasirandom structures
Alex Zunger, Su‐Huai Wei, L. G. Ferreira et al. · Physical Review Letters · 1990 · 3.8K citations