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Soliton Energy in the F.C.C. Antiferromagnet Ceas
Author(s) -
Liu WuMing,
Zhang XinMing,
Zhang Dan,
Li ShiHong,
Zhou BenLian
Publication year - 1994
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221820221
Subject(s) - ansatz , hamiltonian (control theory) , soliton , partial differential equation , physics , inverse scattering problem , mathematical physics , nonlinear system , antiferromagnetism , bound state , scattering , scalar (mathematics) , quantum mechanics , mathematics , geometry , mathematical optimization
Employing the Dyson‐Maleev transformation and the coherent state ansatz, two partial differential equations of motion from the Hamiltonian of the f.c.c. antiferromagnet CeAs are obtained. By using the multiple scalar method and the long‐wavelength approximation, these equations are reduced to a nonlinear Schrödinger equation. The single soliton solution is obtained by using the inverse scattering transformation. For the single soliton bound state, the energy and the spatial configurations of the spin are given.