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- W2324583536 abstract "In order to clarify the nature of the neutral Mn acceptor in GaP, we have carried out optical-absorption and electron-paramagnetic-resonance (EPR) experiments using both conventional and thermally detected EPR on semi-insulating GaP:Mn. In thermal equilibrium at low temperatures, all the manganese occurs in the charged acceptor state ${mathrm{Mn}}_{mathrm{Ga}}^{2+}$(${mathit{A}}^{mathrm{ensuremath{-}}}$). By illumination with photon energies greater than 1.2 eV, it can be partially converted into the neutral charge state. The arising photostimulated EPR spectrum shows the characteristic of a tetragonally distorted center with an integer spin. The resonance lines are detectable only at temperatures below 7 K, and their linewidth of about 50 mT is due to the unresolved Mn-hyperfine splitting. We interpret the experimental data in terms of ${mathrm{Mn}}_{mathrm{Ga}}^{3+}$ ions on strain-stabilized sites of tetragonal symmetry due to a strong Tensuremath{bigotimes}ensuremath{epsilon} Jahn-Teller coupling within the $^{5}$${mathit{T}}_{2}$ ground state. Such a behavior is expected for a 3${mathit{d}}^{4}$ defect, as observed for the isoelectronic impurity ${mathrm{Cr}}^{2+}$ in GaAs, and other tetrahedrally coordinated semiconductors. The analysis of the EPR spectra thus verifies that, in GaP, the neutral charge state of the Mn acceptor is ${mathrm{Mn}}_{mathrm{Ga}}^{3+}$(${mathit{A}}^{0}$) in contrast to its behavior in GaAs and InP. textcopyright{} 1996 The American Physical Society." @default.
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- W2324583536 date "1996-10-15" @default.
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- W2324583536 title "Neutral manganese acceptor in GaP: An electron-paramagnetic-resonance study" @default.
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- W2324583536 doi "https://doi.org/10.1103/physrevb.54.10508" @default.
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