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- W1566119662 abstract "We have studied the transport and low-field magnetotransport of the two-dimensional electron gas in $mathrm{G}mathrm{a}mathrm{A}mathrm{s}ensuremath{-}{mathrm{Al}}_{x}{mathrm{Ga}}_{1ensuremath{-}x}mathrm{As}$ heterostructures in the weak-localization regime and determined the localization parameter ($ensuremath{alpha}=0.75ensuremath{-}0.85$), the interaction coefficient ($1ensuremath{-}F=0.5ensuremath{-}3.2$), the inelastic scattering time ${ensuremath{tau}}_{mathrm{in}}$, and its temperature exponent ($P=1.0$). The experiment shows unambiguously the importance of both the localization effect and the interaction effects. While the observation of $ensuremath{alpha}<1$ is explained by the importance of the Maki-Thompson scattering process, also operative in our case of the repulsive electron-electron interaction, several outstanding features of the data remain unexplained. They include the following: (1) ${ensuremath{tau}}_{mathrm{in}}$ being 10 times larger than theory, (2) $1ensuremath{-}F$ at a high density being 5 times its expected value, and (3) a temperature-sensitive negative magnetoresistance in parallel $stackrel{ensuremath{rightarrow}}{mathrm{B}}$." @default.
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- W1566119662 title "Weak localization of two-dimensional electrons in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi mathvariant=normal>G</mml:mi><mml:mi mathvariant=normal>a</mml:mi><mml:mi mathvariant=normal>A</mml:mi><mml:mi mathvariant=normal>s</mml:mi><mml:mo>−</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Al</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>…" @default.
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- W1566119662 doi "https://doi.org/10.1103/physrevb.29.927" @default.
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