# How to relate QHE to temperature

1. Apr 28, 2015

### rwooduk

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
The above forumla is all that is given and I don't understand how to incorporate temperature (or scattering time into it). I tried drude: $$\rho = \frac{m}{ne^{2}\tau }$$ where tau is the scattering time, but then how to bring in temperature?

The question seems so abstract and we havent been given a formula to solve it. Could anyone point me in the right direction please?

2. May 3, 2015