Following article may help you a bit.

Article Anisotropic magnetothermoelectric power of ferromagnetic thin films

The key is time derivative of DoS at Fermi level.

Dear Mariam K.

I think your question is such an interesting question,

First I want to understand well what do you mean with a Electronic state modulation ? Do you mean the Distribution function of Energy of the particles system (i.e. Fermi-Dirac Distribution function for electrons and Bose-Einstein function for phonons) ?

If so, the particles system energy distribution (F-D or B-E) does play an important rol on the modulation of each of the thermoelectric properties of the material, moreover than these function by themselves, their derivatives with respect to Energy, Temperature and Chemical Potential (in the case of electrons (F-D distribution))

And the derivative of the distribution function with respect to Energy and with respect to the Temperature (in the case of phonons, B-E distribution).

Then, there is a function (or a quantity called the "Window Function" also called "Occupation function", which depends on the Energy, chemical potential and the Temperature).

Have you heard about the mechanism energy Filtration for electrons and phonons ?

You can see more about these in the first section of the attached review article

Best Regards !