Ferromagnetic transition in a double-exchange system

Details Ferromagnetic transition in a double-exchange system Ferromagnetic transition in a double-exchange system

2001-02-26

arxiv.org/abs/cond-mat/0102469v2

Physics

Condensed Matter

Statistical Mechanics

4 pages, 1 eps figure, LaTeX2e, RevTeX. References added, text changed

Scientific paper

We study ferromagnetic transition in three-dimensional double-exchange model. The influence of strong spin fluctuations on conduction electrons is described in coherent potential approximation. In the framework of thermodynamic approach we construct for the system "electrons (in a disordered spin configuration) + spins" the Landau functional, from the analysis of which critical temperature of ferromagnetic transition is calculated.

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