Geodesic
Green's functions and the thermodynamic quantities of the Meisenburg model with one-ion anisotropy
Teoretičeskaâ i matematičeskaâ fizika, Tome 8 (1971) no. 3, pp. 381-391 
N. A. Potapkov. Green's functions and the thermodynamic quantities of the Meisenburg model with one-ion anisotropy. Teoretičeskaâ i matematičeskaâ fizika, Tome 8 (1971) no. 3, pp. 381-391. http://geodesic.mathdoc.fr/item/TMF_1971_8_3_a9/
@article{TMF_1971_8_3_a9,
     author = {N. A. Potapkov},
     title = {Green's functions and the thermodynamic quantities of the {Meisenburg} model with one-ion anisotropy},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {381--391},
     year = {1971},
     volume = {8},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1971_8_3_a9/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

The method of solution is developed for the chain of equations for Green functions, which is based on using of the exact kinematical relationships. For the particular case $S=1$ ($S$ being the spin of a single atom) the thermodynamical quantities and the Green function are calculated in a large region of temperature and the correction to the Curie temperature is found. In the case of arbitrary spin $S$ the results for the low temperature region are obtained.

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