Magnetotransport in the doped Mott insulator

Details Magnetotransport in the doped Mott insulator Magnetotransport in the doped Mott insulator

1998-10-16

arxiv.org/abs/cond-mat/9810207v2

Phys. Rev. B 59, 1800 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 7 figures, accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.59.1800

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 $\sigma_{xy}\sim 1/T^2$ obtained by various authors, whereas the general behavior is $\sigma_{xy}\sim 1/T$, as for the longitudinal conductivity. We find that Kohler's rule is neither obeyed at high nor at intermediate temperatures.

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