Recent content by aabb009

  1. A

    Solving Phonon Excitation in Diatomic Lattices

    Homework Statement Ok, I need to show that in an acoustic mode of vibration in a diatomic lattice, for small k, \omega \propto k, and find the constant of proportionality. Homework Equations A_1\left(\omega^2M-\frac{2T}{a}\right)+A_2\left(\frac{2T}{a}cos(ka)\right)=0 , and...