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Density of states (DOS) for bilayer graphene under the effect of an electric field

  1. Jul 18, 2010 #1
    Hi all. Is there any place where I can check how to derive the DOS of bilayer graphene subject to an external field. I have got the Hamiltonian right and solved the eenrgies but then I am not sure how to obtain the DOS right..


    Thanks
     
  2. jcsd
  3. Jul 21, 2010 #2

    olgranpappy

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    Homework Helper

    Re: Density of states (DOS) for bilayer graphene under the effect of an electric fiel

    Easiest thing to do is lorentzian broadened approximation.

    pi*rho(E)~ sum_i g/((E-e_i)**2+g**2)

    For some small g (the broadening), where e_i are the energies which you already have. If those are correct the dos should look correct, but I don't actually have a check for you, sorry. Also, apologies about the typesetting, I'm typing this on my phone. Cheers.
     
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