Non-adiabatic non-linear impurities in linear hosts

D. Chen, M. I. Molina, G. P. Tsironis

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

We study the dynamics of non-adiabatic Holstein-type impurities embedded in an infinite linear chain. The impurities are modelled as Einstein oscillators coupled to specific sites of an infinite one-dimensional tight-binding host. We present numerical evidence providing bounds for the onset of self-trapping that depend critically on the initial conditions of the oscillators. We show that, in general, small but finite oscillator masses do not substantially change the self-trapped character of the states. For intermediate as well as large oscillator masses self-trapping can still occur for some initial oscillator preparations.

Original languageEnglish
Article number008
Pages (from-to)8689-8702
Number of pages14
JournalJournal of Physics: Condensed Matter
Volume5
Issue number46
DOIs
Publication statusPublished - Dec 1 1993

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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