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∞ 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)MnO3 is reproduced very well.
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