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- W2022643312 abstract "We report a determination of band offsets in strained-layer ${mathrm{In}}_{x}{mathrm{Ga}}_{1ensuremath{-}x}mathrm{As}$-GaAs quantum wells lattice-matched to GaAs. Using a light-scattering method, we find a large offset for the averaged valence bands, which extrapolates to $ensuremath{Delta}{E}_{v,mathrm{av}}=0.49$ eV in the InAs-GaAs system. This vlaue contradicts previous experimental determinations but agrees with predictions of theories that consider charge-transfer effects at the interface. It follows from some of these theories that $ensuremath{Delta}{E}_{v,mathrm{av}}$ has a surprisingly strong uniaxial strain dependence, a fact that is consistent with our experimental result. Our light-scattering experiment leads to a new band structure for the ${mathrm{In}}_{x}{mathrm{Ga}}_{1ensuremath{-}x}mathrm{As}$-GaAs system lattice-matched to GaAs in which the ground state for light holes is localized in the ${mathrm{In}}_{x}{mathrm{Ga}}_{1ensuremath{-}x}mathrm{As}$ layers. This conclusion is supported by photoluminescence excitation experiments." @default.
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- W2022643312 title "Large valence-band offset in strained-layer<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>In</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Ga</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi mathvariant=normal>As</mml:mi></mml:math>-GaAs …" @default.
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- W2022643312 doi "https://doi.org/10.1103/physrevb.36.8165" @default.
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