Week 6

Lecture 11, 26 February, 13.15-15.00, FL51

Kinetics of the Fermi electrons. Boltzmann equation.
Impurity scattering.

Reading

A&M: Chapter 13, 16, 1.

Review questions

1. Discuss Boltzmann equation. What is the collision term for scattering by impurities?
2. What is the relaxation time approximation?
3. Why semiclassical approximation is good for kinetics of the Fermi electrons?

Lecture 12, 28 February, 10.00-12.00, FL51

Kinetics of the Fermi electrons. Conductivity, thermal conductivity.
ac Conductivity.

Reading

A&M: Chapter Chapter 13, 16, 1.

Review questions

1. What is residual resistance? Derive Drude formula for dc conductivity.
2. Derive conductivity in ac electric field. What is the difference between low and high frequency conductivity?
3. Derive thermal conductivity. What causes deviations from Wiedemann-Franz law?