Kondo resonance and logt conductivity in highly conducting trans-polyacetylene

L. Cruz, Philip W Phillips, A. H.Castro Neto

Research output: Contribution to journalArticlepeer-review


The density of states of a I/-impurity in a chain of trans-polyacetylene is calculated as a function of the atomic impurity level and the hybridization energy. A residual gap in the density of states of the conduction band is included. It is shown that a Kondo-like resonance exists at the top of the gap and that a log T behavior should occur in the resistivity of the sample, as experiments have revealed. We demonstrate that in order to observe the resonance, the gap must be smaller than the Kondo temperature in the gapless system.

Original languageEnglish (US)
Pages (from-to)389-394
Number of pages6
Issue number5
StatePublished - Feb 10 1995

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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