Conductance fluctuations in quantum wire systems: A comparison between different scattering models

Anna Grincwajg, G. Edwards, D. K. Ferry

Research output: Contribution to journalArticle

2 Scopus citations


Two scattering models are investigated in quasi-ballistic quantum point contact systems; a model with a few point scattering centers versus the Anderson model with on-site disorder. An exact, recursive Green's function calculation is performed to obtain magneto-transport properties. We show that, in the quasi-ballistic regime, the two models are not equivalent. The Anderson model can reproduce the same fluctuation amplitude as the "few-scatterer" model, but fails to reproduce the correlation field, since the characteristic trajectory sizes are different in the two models.

Original languageEnglish (US)
Pages (from-to)54-56
Number of pages3
JournalPhysica B: Condensed Matter
Issue number1-4
StatePublished - Sep 1996



  • Ballistic
  • Disorder
  • Non-universal conductance fluctuations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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