Si. Belov et Bi. Kochelaev, ELEMENTARY SPIN EXCITATIONS IN A HEISENBERG S=1 2 ANTIFERROMAGNET WITH SKYRMIONS/, Physics of the solid state, 39(4), 1997, pp. 574-576
The elementary spin excitations in two-dimensional Heisenberg antiferr
omagnets with spin S=1/2 in a metastable, spatially inhomogeneous stat
e are investigated. The energy spectrum of the excitations, the local
order parameter, and the temperature dependence of the spin correlatio
n length are found It is shown that the results obtained can be used t
o explain the experimental data on neutron scattering in La2CuO4 at te
mperatures T>T-N. (C) 1997 American Institute of Physics.