Abstract
We study the nonlinear spin excitations in a one-dimensional anisotropic Heisenberg ferromagnetic spin chain with octupole–dipole interaction by a semi-classical approach using Glauber's coherent state method combined with the Holstein–Primakoff bosonic representation for the spin operator in the continuum limit. The associated dynamics are governed by a generalized higher-order nonlinear Schrödinger equation. We point out that the presence of a higher-order influence of octupole–dipole interaction in the ferromagnetic medium enhances the magnetization switching process in the nanoscale regime through the flipping of a soliton.
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