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- W2044385714 abstract "A significant reduction of the two-dimensional electron gas (2DEG) density ${n}_{2D}$ in a modulation doped GaAs/AlGaAs quantum well is observed when the 2D-electrons are heated by microwave (mw) irradiation at 1.8 K. A dependence of ${n}_{2D}$ on the effective electron temperature ${T}_{e}$ leads to a remarkable hysteresis of the optically detected dimensional magnetoplasma (cyclotronlike) resonance, namely, to a bistability of the 2DEG-free hole photoluminescence (PL) spectrum as the magnetic field is scanned back and forth. The ${n}_{2D}$ and ${T}_{e}$ values for the nonequilibrium 2DEG are obtained from the PL spectrum analysis. The PL time-resolved study shows that ${n}_{2D}$ depends on the mw pulse duration and has a long recovery time $ensuremath{sim}{10}^{ensuremath{-}2}mathrm{sec}.$ This phenomenon is attributed to an increased vertical transport of the warm electrons out of the quantum well." @default.
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- W2044385714 date "2001-10-03" @default.
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- W2044385714 title "Photoluminescence hysteresis of the optically detected cyclotron-like resonance of a two-dimensional electron gas" @default.
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- W2044385714 doi "https://doi.org/10.1103/physrevb.64.161306" @default.
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