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- W1973751006 abstract "The temperature dependence of the cyclotron-resonance linewidth has been measured in several GaAs-${mathrm{Ga}}_{1mathrm{ensuremath{-}}mathrm{x}}$${mathrm{Al}}_{mathrm{x}}$As heterojunctions up to room temperature. For high temperatures (T>50 K) the linewidth is consistent with scattering dominated by LO phonons. Below ensuremath{sim}50 K the linewidths were much smaller and showed greater temperature dependences than expected from low-field mobility calculations. The values measured at 4 K were in general agreement with theoretical calculations in which screening was included self-consistently. The low-temperature linewidths varied slowly with electron concentration or inverse spacer-layer thickness, suggesting that scattering by either impurities in the GaAs or alloy disorder in the ${mathrm{Ga}}_{1mathrm{ensuremath{-}}mathrm{x}}$${mathrm{Al}}_{mathrm{x}}$As may be the dominant mechanism at high fields. The linewidth values lead to the deduction of a short-range scattering mobility limit of order ${10}^{9}$ ${mathrm{cm}}^{2}$ ${mathrm{V}}^{mathrm{ensuremath{-}}1}$ ${mathrm{s}}^{mathrm{ensuremath{-}}1}$." @default.
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- W1973751006 date "1989-06-15" @default.
- W1973751006 modified "2023-09-26" @default.
- W1973751006 title "Temperature dependence of the cyclotron-resonance linewidth in GaAs-<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 mathvariant=normal>−</mml:mi><mml:mi mathvariant=normal>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=…" @default.
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- W1973751006 doi "https://doi.org/10.1103/physrevb.39.13302" @default.
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