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I Why E-k diagrams?

  1. Jul 17, 2016 #1
    So I'm fairly new to them and I was wondering about the reasons it is used so extensively. It'd be great to have a discussion on its significance in various applications. When exactly did people start using these diagrams? How is it used in various parts of physics. What all information can it convey? What according to you are some lesser known facts about the E-k diagrams? Are there any great references to gain insight about them apart from the standard books like Charles Kittle, Ashcroft Mermin etc?! Looking forward to your inputs.
  2. jcsd
  3. Jul 23, 2016 #2
    Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
  4. Jul 23, 2016 #3
    Your question is quite general and you had better put only one of them in the post. The E-K diagram includes vital information about the electronic behavior of solids. As a very simple example you can distinguish what the solid is (conductor, insulator, semiconductor) regarding the energy gap. Also this diagram can be used for transport calculations, optical transitions and many other goals.
  5. Jul 24, 2016 #4
    One of the most important reasons for E-k diagrams (or more commonly known as bandstructures) is because of interactions of a material with photons, phonons, etc. In all interactions, energy and momentum must be conserved. By using E-k diagrams, one can keep track of both energy and momentum at the same time and determine which processes are allowed and which are not.
  6. Jul 25, 2016 #5
    This was the sort of answer I was looking for. I guess I generalised the question a lot. Thank you for your inputs.
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