Total number of states will not be changed?

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SUMMARY

The discussion focuses on whether the introduction of periodic potential in superlattices affects the total number of electronic states compared to bulk materials. It concludes that while bulk materials consist of a single material, superlattices are composed of at least two materials, complicating the direct comparison of their states. The periodic potential in superlattices does not significantly alter the total number of states but introduces complexities that differentiate them from bulk materials.

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PRB147
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For bulk solid and superlattices:


Does the introduction of the periodic potential in superlattices change the total number of states or preserve the same (or almost same) total number of states?
 
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I don't get you question. Bulk will be made of one material, whereas, supperlattice will have at least two materials. How can you relate states of one with the other?
 

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