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Density of state

by mahdi
Tags: density, state
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mahdi
#1
Mar12-14, 10:30 AM
P: 3
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
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bsmile
#2
Mar12-14, 07:35 PM
P: 27
are you sure this expression makes sense? Maybe I miss something?
Douasing
#3
Mar12-14, 07:47 PM
P: 33
Quote Quote by mahdi View Post
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
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.

mahdi
#4
Mar13-14, 06:55 AM
P: 3
Density of state

Thank you, I'm attaching the equation in word denouement.
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bsmile
#5
Mar13-14, 04:01 PM
P: 27
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
mahdi
#6
Mar13-14, 04:23 PM
P: 3
Do you mean the final equation become like this DOS(E)=E. 1/|dEj/dk|

please do you have a reference of this solution ?
bsmile
#7
Mar13-14, 11:26 PM
P: 27
should be DOS(E)= sum_j (1/|dEj/dk|). Take a look at Ashcroft and Mermin's solid state physics


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