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- W2068551714 abstract "We report the observation of a metal-insulator transition at $Bphantom{rule{0ex}{0ex}}=phantom{rule{0ex}{0ex}}0$ in a high mobility two dimensional hole gas in a GaAs-AlGaAs heterostructure. A clear critical point separates the insulating phase from the metallic phase, demonstrating the existence of a well defined minimum metallic conductivity ${ensuremath{sigma}}_{mathrm{min}}{phantom{rule{0ex}{0ex}}=phantom{rule{0ex}{0ex}}2e}^{2}/h$. The $ensuremath{sigma}(T)$ data either side of the transition can be ``scaled'' onto one curve with a single parameter ${T}_{0}$. The application of a parallel magnetic field increases ${ensuremath{sigma}}_{mathrm{min}}$ and broadens the transition. We argue that strong electron-electron interactions ( ${r}_{s}ensuremath{simeq}10$) suppress quantum interference corrections to the conductivity." @default.
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- W2068551714 date "1998-02-09" @default.
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- W2068551714 title "Metal-Insulator Transition at<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mi mathvariant=italic>B</mml:mi><mml:mspace /><mml:mo>=</mml:mo><mml:mspace /><mml:mn>0</mml:mn><mml:mn /></mml:math>in a Dilute Two Dimensional GaAs-AlGaAs Hole Gas" @default.
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- W2068551714 doi "https://doi.org/10.1103/physrevlett.80.1292" @default.
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