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- W2076015874 abstract "The energy of the indirect X exciton in ${mathrm{Al}}_{mathit{x}}$${mathrm{Ga}}_{1mathrm{ensuremath{-}}mathit{x}}$As epitaxial layers (with 0.38x0.81) has been determined by photoluminescence measurements at a sample temperature of 12 K; from these data, the dependence on the Al concentration x of the energy of the ensuremath{Gamma}-X gap has been obtained: ${mathit{E}}_{mathit{g}}^{mathit{X}}$(x)=1.988+0.207x+0.055${mathit{x}}^{2}$ eV. This relation is characterized by a very small bowing. From our data we deduce also the coordinates of the ensuremath{Gamma}-X crossover point: ${mathit{x}}_{mathit{c}}$=0.385ifmmodepmelsetextpmfi{}0.016 and ${mathit{E}}_{mathit{c}}$=2076ifmmodepmelsetextpmfi{}4 meV at T=0 K and ${mathit{x}}_{mathit{c}}$=0.396ifmmodepmelsetextpmfi{}0.016 and ${mathit{E}}_{mathit{c}}$=1997ifmmodepmelsetextpmfi{}4 meV at T=300 K." @default.
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- W2076015874 title "Indirect-energy-gap dependence on Al concentration in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Al</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant=italic>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Ga</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi …" @default.
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- W2076015874 doi "https://doi.org/10.1103/physrevb.45.10951" @default.
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