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An investigation in SI GaAs of the photoquenching of the magnetic circular dichroism optically detected magnetic resonance (MCD-ODMR) signals of the antisite, As Ga , defect shows that this centre can be identified as the dominant deep donor EL2. The results suggest that EL2 is the neutral state, D 0 , of the antisite, implying that the metastable state is the triplet state of this two-electron defect.
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Deiri et al. (1984) studied this question.
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