Abstract
Study of the polarization of a dominant 1.0 $\ensuremath{\mu}\mathrm{m}$ photoluminescence band produced by 2.5 MeV electron irradiation of ZnTe in situ at 4.2 K reveals it to arise from a Frenkel pair produced on the Zn sublattice. Optical detection of electron paramagnetic resonance (ODEPR) studies reveal Frenkel pairs on the Te sublattice. All pairs disappear in various annealing stages from 35 K to 120 K. The Te-sublattice pairs can also be made to disappear by optical injection at 1.5 K. Deconvoluting the Te interstitial contribution to the $S=1$ ODEPR spin Hamiltonian parameters leads to a model for it as ${\mathrm{Te}}_{i}^{\ensuremath{-}},$ which is only slightly distorted off-center from a ${T}_{d}$ interstitial site. The distortion, viewed as partially of Jahn-Teller origin, provides a logical explanation for its optically induced migration.
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