The plot will display the Energy Functional vs. Energy by default. Click the pull-down menu and go to Band Information. From the pull-down menu, now select Allowed Bands. This shows the Band Information graphically.

Looking at the Allowed Bands plot, what do the green lines and red lines represent?

From both the Band Info and Allowed Bands, you should observe in general, for higher band indices the bands get wider and the gaps get narrower. Explain why this occurs.

Periodic Potential Lab Terminate Keep for later Periodic Potential Details Simulate Potential type Energy Details Well Geometry Result: Band Information Width of single periodic cell (A): 100A Enter the a (A): 50A Band Emin Emax Bandwidth Bandgap Index [ev evl evl [ev] 0.312 0. 321 0.009 0. 78072 1.102 1.205 0.103 0.5646 1.770 2.260 0.490 0,10964 2. 370 3.313 0.944 0.1844 3.498 4. 779 .281-- Effective mass of the particle (m0): 0.023 Find Select All Vmax 2 results Clear One Clear All PNG image 18.5 kB Step Potential Simulation = #2 All Width of single periodic cell (A) 100A Enter the a (A): 50A Effective mass of the particle (m0) 0.023 Vmin Periodic Potential Lab Terminate Keep for later Periodic Potential Details Simulate Potential type Energy Details Well Geometry Result: Band Information Width of single periodic cell (A): 100A Enter the a (A): 50A Band Emin Emax Bandwidth Bandgap Index [ev evl evl [ev] 0.312 0. 321 0.009 0. 78072 1.102 1.205 0.103 0.5646 1.770 2.260 0.490 0,10964 2. 370 3.313 0.944 0.1844 3.498 4. 779 .281-- Effective mass of the particle (m0): 0.023 Find Select All Vmax 2 results Clear One Clear All PNG image 18.5 kB Step Potential Simulation = #2 All Width of single periodic cell (A) 100A Enter the a (A): 50A Effective mass of the particle (m0) 0.023 Vmin