Effect of temperature on polaron dynamics in poly-DNA

Zhen Qu, Yuan Li, Wen Liu, Da wei Kang, Shi jie Xie*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We investigate the effect of temperature on polaron dynamics in the framework of a tight-binding model. The dissociation of a polaron will become fast with the increase of temperature. There exists a crossover of the charge localization time from strong to weak temperature-dependence. Instead of the uniform motion at zero temperature, a polaron moves un-uniformly under a driven field at a finite temperature, which indicates a discrete hopping between base pairs. It is also found that the polaron motion is thermally activated. A high temperature will result in a fast movement of a polaron under a deriving field. Crown

Original languageEnglish (US)
Pages (from-to)2189-2192
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume373
Issue number25
DOIs
StatePublished - Jun 1 2009

Keywords

  • Polaron dynamics
  • Poly-DNA
  • Temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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