Exercises for next section
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8.6.1 Here are two wave functions from the same band given by "bloch" with the atom potential. The band is quite narrow so that tight binding arguments are useful. (Both the green and the red functions go to zero at the center of the atomic well.)
A) Which function corresponds to a k-value at the top of the band and which to the bottom?
B) Which corresponds to a state near k = 0, and which to a state near k = pi/a?