The relationship between hopping and coherent motion in dynamically disordered systems

Stephen D. Druger, Mark A Ratner

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Diverse transport processes are described within a framework previously developed only for systems undergoing random host reorganization concurrent with carrier hopping. The rule D(ω)=D0(ω-iλ) relating frequency-dependent diffusion with and without random reorganization at rate λ is shown equivalent to a condition on the carrier velocity autocorrelation function that often applies, for physically different reasons, to both coherent and hopping transport. Formulation in terms of mean-square carrier displacement leads to rules for combining renewal (e.g. scattering and host reorganization) processes, and predicts how renewal affects frequency-dependent transport in physically different cases.

Original languageEnglish
Pages (from-to)434-438
Number of pages5
JournalChemical Physics Letters
Issue number4-5
Publication statusPublished - Oct 21 1988

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

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