The treatment in Problem 20.28 applies only to one-dimensional solids. In three dimensions, the variation of density
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The treatment in Problem 20.28 applies only to one-dimensional solids. In three dimensions, the variation of density of states is more like that shown in Fig. 20.70. Account for the fact that in a three-dimensional solid the greatest density of states lies near the centre of the band and the lowest density at the edges.
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p-band s-band Density of states, p Energy
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Permitted states at the low energy edge of the band must have a relatively long characteristic wavelength while the permitted states at the high energ...View the full answer
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