On the existence of photoexcited breathers in conducting polymers

S. Tretiak, A. Piryatinski, A. Saxena, R. L. Martin, A. R. Bishop

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

Formation and decay mechanisms of photoinduced nonlinear vibronic excitations ("breathers") in several conjugated polymers are studied using a quantum-chemical excited state molecular dynamics approach. We identify specific coupled vibrational modes responsible for breather excitations and investigate their dependence on chain length. In addition to intermolecular relaxation mechanisms, our calculations show that intramolecular vibrational energy equilibration results in a decay of breathers on a timescale of hundreds of femtoseconds.

Original languageEnglish
Article number233203
Pages (from-to)1-4
Number of pages4
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number23
DOIs
Publication statusPublished - Dec 2004
Externally publishedYes

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