Geodesic
Coherent potential method for a Heisenberg ferromagnet with nonmagnetic impurities
Teoretičeskaâ i matematičeskaâ fizika, Tome 77 (1988) no. 3, pp. 440-449 Cet article a éte moissonné depuis la source Math-Net.Ru

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The Heisenberg model at low temperatures and with nonmagnetic substitutional impurities is investigated. The coherent potential method and the properties of a percolation cluster are used. The proposed method of making the solutions self-consistent creates a unified theoretical scheme in which expressions can be obtained for the stiffness coefficient of the spin waves and for the magnetization both at low impurity concentrations and nearly critical concentrations. The region of applicability of the obtained expressions is investigated. 
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     author = {A. K. Arzhnikov and A. V. Vedyaev},
     title = {Coherent potential method for {a~Heisenberg} ferromagnet with nonmagnetic impurities},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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A. K. Arzhnikov; A. V. Vedyaev. Coherent potential method for a Heisenberg ferromagnet with nonmagnetic impurities. Teoretičeskaâ i matematičeskaâ fizika, Tome 77 (1988) no. 3, pp. 440-449. http://geodesic.mathdoc.fr/item/TMF_1988_77_3_a10/

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