Magnetoresistance of the Double-Exchange Model in Infinite Dimension

Abstract

Double-exchange model in infinite dimension is studied as the strong Hund's coupling limit $J\to \infty$ of the Kondo lattice model. Several quantities such as Green's function and the d.c.\ conductivity are calculated in analytical forms. Magnetoresistance in lightly doped (La,Sr)MnO${}_3$ is reproduced very well.

8 pages, LaTeX

References in corpus (3)

• Double Exchange Alone Does Not Explain the Resistivity of $L{a}_{1-x}S{r}_{x}Mn{O}_3$
• Transport Properties of the Kondo Lattice Model in the Limit $S=\infty$ and $D=\infty$
• Magnetic Transition Temperature of (La,Sr)MnO${}_3$

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