In the semi-classical model, i noticed that all the electrons with values of k that are in the same brillouin zone are considered to be at the same energy band, but i cant quite understand why it is so.(adsbygoogle = window.adsbygoogle || []).push({});

i know that in each brillouin zone the number of allowed states (of k) is the same as the number of states at each band (N), but that doesn't really provide a full explanation.

so if you can briefly explain the idea behind this (or refer me to the relevant pages at Ashcroft) i would be thankful.

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# Brillouin zones and energy bands

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