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Density of state

  1. Mar 12, 2014 #1
    What is the solution of Dirac delta function of density of sate equation below:

    DOS(E)=2/N ∑ ∫(1/dEj(k)/dk).δ[Ej(k)-E]dE
  2. jcsd
  3. Mar 12, 2014 #2
    are you sure this expression makes sense? Maybe I miss something?
  4. Mar 12, 2014 #3
    Hi,you can use " tex formula tex " to eidt your formula as follows

    [tex]\frac{1}{2}Ax= b[/tex]

    and state your problem clearer.
  5. Mar 13, 2014 #4
    Thank you, I'm attaching the equation in word denouement.

    Attached Files:

  6. Mar 13, 2014 #5
    This is basically the density of state at energy E from N_hex bands. The delta function filters out the energy spectrum at E_j(k_t)=E. 1/|dE/dk| gives density of state at E from the given band
  7. Mar 13, 2014 #6
    Do you mean the final equation become like this DOS(E)=E. 1/|dEj/dk|

    please do you have a reference of this solution ?
  8. Mar 13, 2014 #7
    should be DOS(E)= sum_j (1/|dEj/dk|). Take a look at Ashcroft and Mermin's solid state physics
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