Structural investigation of the C-O complex in GaAs
A carbon-oxygen complex occurring in gallium arsenide crystals after annealing at around 700 °C is studied. Fourier transform infrared absorption measurements on the associated vibrational band at 2060 cm-1 under uniaxial stress reveal that the center has tetragonal symmetry. From the intensity of t...
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Format: | Tagungsbericht |
Sprache: | eng |
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Zusammenfassung: | A carbon-oxygen complex occurring in gallium arsenide crystals after annealing at around 700 °C is studied. Fourier transform infrared absorption measurements on the associated vibrational band at 2060 cm-1 under uniaxial stress reveal that the center has tetragonal symmetry. From the intensity of the 18O-related satellite band it is concluded that four oxygen atoms are involved. Ab initio local density calculations show that a tetragonal CO4 molecule forms a stable entity in the gallium arsenide lattice. |
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ISSN: | 0094-243X 1551-7616 |
DOI: | 10.1063/1.4865620 |