1. Refer to the Figure 5.6 in the textbook, draw the curves of the free electron bands for the cubic primitive crystal structure for n= 2 and n=-3, respectively. E n=-2 2mo2 4. 2mo? n=- 2mo n=0 Figure 5.6. "Free electron bands" plotted in the reduced zone scheme (cubic primitive crystal structure). Compare this figure with the central portion of Fig. 5.2, that is, with the region from zero to nla. Note the sameness of the individual bands.

1. Refer to the Figure 5.6 in the textbook, draw the curves of the free electron bands for the cubic primitive crystal structure for n= 2 and n=-3, respectively. E n=-2 2mo2 4. 2mo? n=- 2mo n=0 Figure 5.6. "Free electron bands" plotted in the reduced zone scheme (cubic primitive crystal structure). Compare this figure with the central portion of Fig. 5.2, that is, with the region from zero to nla. Note the sameness of the individual bands.