Recent content by manutdhk

compared with the energy caused by n and j, the energy split caused by m_j is very small. In the partition function, the former one can be treated as a constant: exp(-E(n,j)/kT). However, the key of partition function is the energy distribution probability. If added a constant in front of this...

Agree ! just the dispersion along high symmetrical lines are not enough, by using delta function method.. however, for an isotropic solid, it's possible to approximate that w(q) is just a function of the amplitute of q, which is equal to "w(q) = w(|q|)". the high symmetrical lines, can cover...

the question is : the expression of g(q) is a function of q, it should be transfer into a function of "w" instead. but How can I do that?

I have searched this topic in our forums. no answer about that. I have obtained the phonon dispersion curve by applied a numerical simulation. However, how can I obtain the phonon density of state from such a curve? generally speaking, g(q)dq = g(w)dw, here q is the wave-vector; w is...