title: Localized spin excitations in an antiferromagnetic spin system with D-M interaction.
abstract: The existence of localized spin excitations and spin deviations along the site in a one-dimensional antiferromagnet with Dzyaloshinski-Moriya (D-M) interaction has been studied using quasiclassical approximation. By introducing the Holstein-Primakoff bosonic representation of spin operators, the coherent state ansatz, and the time dependent variational principle, a discrete set of coupled nonlinear partial differential equations governing the dynamics is derived. Employing the multiple-scale method, one, two and three solitary wave solutions are constructed and depicted graphically.
authors.affiliation: Department of Physics, Women's Christian College, Nagercoil 629 001, India.
authors.forename: T
authors.initials: T
authors.lastname: Evangeline Rebecca
authors.affiliation: Department of Physics, Women's Christian College, Nagercoil 629 001, India.
authors.forename: M M
authors.initials: MM
authors.lastname: Latha