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Temperature dependence of the drain current in the linear region for different . (∎: , 엯: , ▴: at , and ◻: at ). The insets shows the characteristics for various gate voltages, ( step) at .
Temperature dependence of the layer and the carrier mean free path. The top inset shows potential profiles along the channel and corresponding layers at (dash) and (solid). The bottom inset shows self-consistently calculated conduction band profiles. The potential profile is calculated with a 2D charge density of obtained from the Hall measurement. For , is calculated to be . The quasi-Fermi energy level (, dotted line) and the first and second wave functions in the well are also shown.
Temperature dependence of the transmission coefficient at for various drain voltages.
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