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Screening function vs wave number for the two-band model of silicon (111) with and as the solid line. is the screening wave number of the two-dimensional electron gas with , where is the effective Bohr radius. The contribution of band (1) with (dotted line) and of band (2) with (dashed line) to (the solid line) are also shown.
Dingle temperature vs total electron density . The solid lines correspond to the two-band model ( model) for band (1) and band (2) with . The dashed-dotted line represents the one-band model with and .
Effective mobility vs total electron density . The solid line corresponds to the two-band model with . The dashed-dotted line represents the one-band model with and . The solid dot represents an experimental result of Ref. 13 measured at . The dotted line represents the completely spin-polarized electron gas with .
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