Evangeline Rebecca T, Latha MM. Localized spin excitations in an antiferromagnetic spin system with D-M interaction.
CHAOS (WOODBURY, N.Y.) 2016;
26:063116. [PMID:
27368781 DOI:
10.1063/1.4954266]
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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.
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