Intrinsic Localized Modes of a Classical Discrete Anisotropic Heisenberg   Ferromagnetic Spin Chain
  We report several exact intrinsic localized mode solutions of the classical spin evolution equation of a one-dimensional anisotropic Heisenberg ferromagnetic spin chain in terms of Jacobian elliptic functions. These include one, two and three spin excitations. All these solutions have smooth anticontinuum limits. Their linear stability and semiclassical quantization are also discussed briefly. 
M. Lakshmanan, B. Subash and Avadh Saxena
nlin.PS