2.4.5.1 Hall Coefficients

The isothermal Hall coefficients $R_n$ ($R_p$) characterize the transverse quasi Fermi level gradient caused by the magnetic field acting on the electron (hole) current:

$$R_{n,p} = - \frac{\nabla\phi_{n,p}\cdot(\mathbf{B}\times \mathbf{J_{n,p}})}{(\mathbf{B}\times \mathbf{J_{n,p}})^2} \quad \nabla T = 0$$ (2.11)