Abstract
The binding energy and wavefunction associated with an antisite P(Ga) defect in GaP are presented and compared with the spin-Hamiltonian parameters of Kaufmann et al. (1976). Whereas calculations concerning an equivalent phosphorus interstitial failed to produce an s-like bound state, the wavefunction of the antisite defect appears to be localised enough to account for the observed spectrum. The wavefunction in the wave vector space is also presented and its composition indicates that deep centres on Ga site are less likely to be efficient radiative recombination centres in accord with the predictions of Morgan (1969).
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