Phys. Rev. B 60, 6194–6197 (1999)Stationary localized states in one-dimensional systems due to modified nonlinear impuritiesReceived 7 December 1998; revised 8 February 1999; published in the issue dated 1 September 1999 Discrete nonlinear Schrödinger equation (DNLS) of the form i(dCn/dt)=Cn+1+Cn-1-χn(|Cn+1|2+|Cn-1|2-2|Cn|2)Cn is used to study the formation of stationary localized states in one dimensional system due to a single as well as a dimeric nonlinear impurity. The stability of the states and its connection with the nonlinear strength is presented. Results are compared with those obtained from other DNLS’s. It is found that the DNLS used in this paper has more impact on the formation of stationary localized states. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.60.6194
DOI:
10.1103/PhysRevB.60.6194
PACS:
71.55.-i, 72.10.Fk
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