Geodesic
Magnetic susceptibility of a~diluted Ising magnet
Teoretičeskaâ i matematičeskaâ fizika, Tome 201 (2019) no. 2, pp. 280-290

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For the Ising model with nonmagnetic dilution, we consider a method for constructing the “pseudochaotic” impurity distribution based on the condition that the position correlation of movable impurity atoms in neighboring sites vanishes. For the one-dimensional Ising model with nonmagnetic dilution, we find the exact solution and show that the pseudochaotic approximation method gives the exact value of the magnetic susceptibility for this model in a zero external field. We assume that the pseudochaotic impurity distribution is completely uncorrelated in the region of zero magnetization for any lattice. This assumption is based on calculating the correlation functions for the Ising model with nonmagnetic dilution on the Bethe lattice. We find the magnetic susceptibility for that model.
Keywords: Ising model, diluted magnet, Bethe lattice, magnetic susceptibility. 
@article{TMF_2019_201_2_a8,
     author = {S. V. Semkin and V. P. Smagin and E. G. Gusev},
     title = {Magnetic susceptibility of a~diluted {Ising} magnet},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {280--290},
     publisher = {mathdoc},
     volume = {201},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2019_201_2_a8/}
}
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S. V. Semkin; V. P. Smagin; E. G. Gusev. Magnetic susceptibility of a~diluted Ising magnet. Teoretičeskaâ i matematičeskaâ fizika, Tome 201 (2019) no. 2, pp. 280-290. http://geodesic.mathdoc.fr/item/TMF_2019_201_2_a8/