Impurity Susceptibilities in Magnetically Doped cis-Polyacetylene

N. McCulloch, E. Abraham

Research output: Contribution to journalArticle

Abstract

The behaviour of Kondo impurities interacting with hole-doped cis-Polyacetylene is investigated using a worldline quantum Monte Carlo algorithm. For next-nearest-neighbour impurities, collective anti-ferromagnetic spin fluctuations are found. These fluctuations are suppressed by Kondo localisation as the temperature is lowered. For larger impurity separations, no collective spin fluctuations are observed, indicating a short-ranged indirect exchange mechanism in the current model and parameter regime. Bipolarons and collective spin fluctuations can thus co-exist.

Original languageEnglish
Pages (from-to)491-494
Number of pages4
JournalJournal of Superconductivity and Novel Magnetism
Volume25
Issue number2
DOIs
Publication statusPublished - Feb 2012

Keywords

  • Conjugated polymer
  • Kondo impurity
  • Susceptibility
  • Bipolaron
  • cis-Polyacetylene

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