Geodesic
Magnetoelastic soliton excitation in a quasi-one-dimensional antiferromagnet
Teoretičeskaâ i matematičeskaâ fizika, Tome 51 (1982) no. 3, pp. 450-455 
Yu. A. Izyumov; V. M. Laptev. Magnetoelastic soliton excitation in a quasi-one-dimensional antiferromagnet. Teoretičeskaâ i matematičeskaâ fizika, Tome 51 (1982) no. 3, pp. 450-455. http://geodesic.mathdoc.fr/item/TMF_1982_51_3_a15/
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     title = {Magnetoelastic soliton excitation in a~quasi-one-dimensional antiferromagnet},
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Voir la notice de l'article provenant de la source Math-Net.Ru

It is shown that in a linear antiferromagnetic chain of spins that interact with lattice vibrations there is an excitation corresponding to a soliton solution of the nonlinear equation for the amplitude of the spin deviations at the sites. In contrast to a ferromagnetic chain, in which the nonlinear Schrödinger equation is obtained for the amplitude, in the antiferromagnetic case there is a nonlinear wave equation. However, the soliton solutions of the two equations are similar, though the expressions for the basic soliton parameters – width, amplitude, and precession frequency – are different, this being due to the fact that the spin wave dispersion laws in the two cases are different. Anisotropy plays an important part. A soliton solution is obtained for easyaxis anisotropy.

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