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Homework Help: Solid state physics question

  1. Mar 13, 2010 #1
    1. The problem statement, all variables and given/known data

    Given: Diamond structure with conventional lattice parameter a.
    Show the Fourier component of the crystal potential at the reciprocal lattice point (4(pi)/a, 0, 0) is zero.

    2. Relevant equations
    (I don't know!)

    3. The attempt at a solution
    The Fourier component of potential = U_G1, U_-G1 (although I have no idea what G1 is.... this was pulled from my notes)

    G = (2hpi/a) where h is an integer
    G = (2pi/a)(h, k, l) where h,k,l must either all be odd or all be even

    This is as far as I got... any suggestions?

    If it helps, I have been given the solution but I don't understand it, which is why I'm asking here. The solution mentions using the structure function (what is it?) and allowing Bragg reflection (but I don't know how to incorporate it).
  2. jcsd
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