Assumptions of Drude and Sommerfeld Models: A Comparison

  • Thread starter Thread starter carlosvelcab
  • Start date Start date
  • Tags Tags
    Theory
carlosvelcab
Messages
4
Reaction score
0
What are assumptions on which the Drude model and the Sommerfeld model Match? and In which assumptions both differs?
 
Physics news on Phys.org
Is this a homework problem? The answer should be clear from a reading of the first few chapters of a basic solid state physics text, like Ashcroft & Mermin or Kittel.
 
No it isn't a homework, I just want to make sure that my conclusions are right.
My answer for the matches would be: In both cases were proposed a free electron besides the importance from the potential of the nucleus, and the interaction between electrons, could be important given its proximity.
And the resulting from a collision is supposed not depend of the configuration of the electrons at the collision moment

And differs is:
That drude apply the Maxwell-Boltzmann statistics and sommerfeld applies the fermi dirac statistics to the electon conduction. Sommerfeld applies the theory of fermi dirac to the electronic velocity distribution

I read the book the ashcroft before you told me, I just want to make sure that my conclusions are right
 
Yeah, that sounds about right.
 
From the BCS theory of superconductivity is well known that the superfluid density smoothly decreases with increasing temperature. Annihilated superfluid carriers become normal and lose their momenta on lattice atoms. So if we induce a persistent supercurrent in a ring below Tc and after that slowly increase the temperature, we must observe a decrease in the actual supercurrent, because the density of electron pairs and total supercurrent momentum decrease. However, this supercurrent...
Back
Top