Nonlinear impurities in a linear chain

M. I. Molina, G. P. Tsironis

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)


We use the Green's function formalism to evaluate analytically the stationary states for an electron moving in a one-dimensional chain in the presence of one and two adiabatic Holstein-type nonlinear impurities. For the case of one nonlinear monomer we find that, contrary to what occurs in the linear impurity problem, the strength of the impurity must be greater than half the bandwidth for a bound state to exist. In the case of a nonlinear dimer resonance phenomena are observed that lead to complete transmission through the dimer.

Original languageEnglish
Pages (from-to)15330-15333
Number of pages4
JournalPhysical Review B
Issue number22
Publication statusPublished - Jan 1 1993

ASJC Scopus subject areas

  • Condensed Matter Physics

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