The moving nonlinear excitations (intrinsic localized vibrational modes) for one-dimensional homogeneous monoatomic lattice with quartic anharmonicity are obtained analytically by means of the semidiscrete approximation, with which the carrier wave is treated explicitly while the envelope function is described in the continuum approximation. Besides the moving pulse-like type of excitations which was found previously in both analytical and numerical works, we find that the moving kink-like type of excitations can also exist. And the kink-like excitations appeared previously only in the stationary form for such a lattice system.
部门归属
hunan normal univ, dept phys, changsha 410081, peoples r china. hunan normal univ, inst nonlinear sci, changsha 410081, peoples r china. chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;zhou, gh (reprint author), hunan normal univ, dept phys, changsha 410081, peoples r china
G. H. Zhou,J. R. Yan. Analytical study of moving excitations for one-dimensional homogeneous lattice with quartic anharmonicity[J]. Journal of Materials Science & Technology,1999,15(4):345-347.
APA
G. H. Zhou,&J. R. Yan.(1999).Analytical study of moving excitations for one-dimensional homogeneous lattice with quartic anharmonicity.Journal of Materials Science & Technology,15(4),345-347.
MLA
G. H. Zhou,et al."Analytical study of moving excitations for one-dimensional homogeneous lattice with quartic anharmonicity".Journal of Materials Science & Technology 15.4(1999):345-347.
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