(1) Consider two-dimensional electron gas (2DEG) with the sheet carrier density (n2D) of 8 x 10¹2 cm2. The effective mass (me) is 0.04mo. (mo is the electron rest mass) Find the Fermi wavelength (2F, nm) and the Fermi velocity (VF, m/sec). Find the mean free path (7m, um). Here, the electron mobility is 800,000 cm²/Vs. Discuss the advantages of 2DEG from the viewpoint of the mean free path. (2) (3)
(1) Consider two-dimensional electron gas (2DEG) with the sheet carrier density (n2D) of 8 x 10¹2 cm2. The effective mass (me) is 0.04mo. (mo is the electron rest mass) Find the Fermi wavelength (2F, nm) and the Fermi velocity (VF, m/sec). Find the mean free path (7m, um). Here, the electron mobility is 800,000 cm²/Vs. Discuss the advantages of 2DEG from the viewpoint of the mean free path. (2) (3)
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Consider
(1)
two-dimensional electron gas (2DEG) with the sheet carrier density (n2D)
of 8 x 10¹2 cm2. The effective mass (me) is 0.04mo. (mo is the electron rest mass)
Find the Fermi wavelength (2F, nm) and the Fermi velocity (VF, m/sec).
Find the mean free path (lm, um). Here, the electron mobility is 800,000 cm²/Vs.
Discuss the advantages of 2DEG from the viewpoint of the mean free path.
(2)
(3)
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