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- W1969706225 abstract "We demonstrate that X-ray irradiation can be used to induce an insulator-metal transition in Si-doped Al$_{0.35}$Ga$_{0.65}$As, a semiconductor with {it DX} centers. The excitation mechanism of the {it DX} centers into their shallow donor state was revealed by studying the photoconductance along with fluorescence. The photoconductance as a function of incident X-ray energy exhibits an edge both at the Ga and As K-edge, implying that core-hole excitation of Ga and As are efficient primary steps for the excitation of {it DX} centers. A high quantum yield ($gg 1$) suggests that the excitation is indirect and nonlocal, due to secondary electrons, holes, and fluorescence photons." @default.
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- W1969706225 date "2001-12-15" @default.
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- W1969706225 title "X-ray induced persistent photoconductivity in Si-doped Al0.35Ga0.65As" @default.
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- W1969706225 doi "https://doi.org/10.1063/1.1410894" @default.
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