Magnetotransport in the doped Mott insulator

We investigate the Hall effect and the magnetoresistance of strongly correlated electron systems using the dynamical mean-field theory. We treat the low- and high-temperature limits analytically, and explore some aspects of the intermediate-temperature regime numerically. We observe that a bipartite-lattice condition is responsible for the high-temperature result ${\sigma }_{\mathrm{xy}}\sim {1/T}^2$ obtained by various authors, whereas the generic behavior is ${\sigma }_{\mathrm{xy}}\sim 1/T,$ as for the longitudinal conductivity. We find that Kohler’s rule is obeyed neither at high nor at intermediate temperatures.