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(Color online) Field transmission magnitude (upper panel) and phase (lower panel) of the GaAs (red data) and InAs (black data) 2DEGs. The solid symbols are the original experimental data. The dotted lines are fits to Eq. (2) using the variation of inferred from the thin-film approximation [Eq. (3)]. Circles: , triangles: , and squares: . Inset: schematic of the key features of the terahertz TDS system.
Frequency dependence of inferred from the thin-film approximation [Eq. (3)]. Circles: , open squares: , triangles: , and filled squares: . The solid lines are interpolated between data points.
Temperature dependence of , , and in the GaAs (upper) and InAs (lower) 2DEGs. The solid lines are guides for the eyes.
Summary of the key parameters of the GaAs and InAs 2DEG samples.
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