Geodesic
Magnetic excitations in an anharmonic ferromagnetic crystal
Teoretičeskaâ i matematičeskaâ fizika, Tome 19 (1974) no. 1, pp. 115-124 
F. R. Vukailovich; H. Konwent; N. M. Plakida. Magnetic excitations in an anharmonic ferromagnetic crystal. Teoretičeskaâ i matematičeskaâ fizika, Tome 19 (1974) no. 1, pp. 115-124. http://geodesic.mathdoc.fr/item/TMF_1974_19_1_a10/
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     author = {F. R. Vukailovich and H. Konwent and N. M. Plakida},
     title = {Magnetic excitations in an~anharmonic ferromagnetic crystal},
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Voir la notice de l'article provenant de la source Math-Net.Ru

An investigation is made of the spectrum of magnetic excitations in an anharmonic ferromagnet in the framework of the Heisenberg model with allowance for the spin-phonon interaction of all orders in the displacements of the atoms. An exact representation is obtained for the mass operator of the two-time Green's function of the transverse spin components and an approximate expression for it is considered in the second order in the renormalized spinphonon and spin-spin interactions.

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