Transport Properties of the Kondo Lattice Model in the Limit $S=\infty$ and $D=\infty$

Details Transport Properties of the Kondo Lattice Model in the Limit $S=\infty$ and $D=\infty$ Transport Properties of the Kondo Lattice Model in the Limit $S=\infty$ and $D=\infty$

1994-07-12

arxiv.org/abs/cond-mat/9407052v1

J. Phys. Soc. Jpn. 63 (1994) 3214

Physics

Condensed Matter

8 pages, 2 PS figures at the end, LaTeX, ISSP Tech.Rep. No. 2840

Scientific paper

10.1143/JPSJ.63.3214

The Kondo lattice model with Hund's ferromagnetic spin coupling is investigated as a microscopic model of the perovskite-type 3d transition-metal oxide La$_{1-x}$Sr$_x$MnO$_3$. In the classical spin limit $S=\infty$ and the infinite-dimensional limit $D=\infty$, the one-body Green's function is calculated exactly. Transport properties of the system in the presence of magnetic fields are calculated. The giant magnetoresistance of this model, which is in a good agreement with the experimental data of La$_{1-x}$Sr$_x$MnO$_3$, is explained by the spin disorder scattering process.

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