@@ -103,8 +103,8 @@ We first consider an electron in free space, moving in a plane perpendicular to
1. Calculate the Drude scattering time $\tau$ at room temperature.
2. Assuming that electrons move with the thermal velocity $\langle v \rangle = \sqrt{\frac{8k_BT}{\pi m}}$, calculate the electron mean free path $\lambda$.
3. The Drude model assumes that $\lambda$ is independent of temperature. How does the electrical resistivity $\rho$ depend on temperature under this assumption? Sketch ρ(T).
5. Compare your sketch of ρ(T) with that in the lecture notes. In what respect do they differ? Discuss possible reasons for differences.
3. The Drude model assumes that $\lambda$ is independent of temperature. How does the electrical resistivity $\rho$ depend on temperature under this assumption? Sketch $\rho(T)$.
5. Compare your sketch of $\rho(T)$ with that in the lecture notes. In what respect do they differ? Discuss possible reasons for differences.
