2.2 Sommerfeld Free Electron Therory Flashcards
1
Q
State the 4 assumptions in the Sommerfield free electron theory
A
- Ion cores are spread uniformly
- Electrons move in a constant electrostatic potential. Assume there is no electric field
- Dont care about crystal structure
- Ignore electron repulsion
2
Q
Name the four introduced Fermi quantities
A
Fermi Energy
Fermi Surface - A sphere of radius k_F in k space
Fermi Temp
Fermi Velocity
3
Q
What do we mean by a perfect crystal?
A
No defects, scattering is only by the phonons
4
Q
What happens to the Fermi Sphere when an electric field is applied?
A
It will be displaced in k space
