Breathers in systems with intrinsic and extrinsic nonlinearities

Leonor Cruzeiro-Hansson, John Christopher Eilbeck, J. L. Marín, Francis Michael Russell

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


We study the interplay between nonlinearity and localization in a model consisting of a quantum quasiparticle interacting with a nonlinear extended lattice. The isolated lattice can support discrete breathers, and the coupling of the quasiparticle to the lattice leads to localized quasiparticle states. Minimum energy states of the full system can have both a breather and a solitonic character. Excited states lead to interesting new phenomena, such as full breather states, which arise from the combination of intrinsic and extrinsic nonlinearity. © 2000 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)101-112
Number of pages12
JournalPhysica D: Nonlinear Phenomena
Issue number1-2
Publication statusPublished - 1 Aug 2000


  • Discrete breathers
  • Polarons


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