Extended states in finite one-dimensional, disordered, highly doped, ItransR-polyacetylene chains
- 1 February 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 45 (6) , 3107-3110
- https://doi.org/10.1103/physrevb.45.3107
Abstract
In this work we calculate the density of states for long finite one-dimensional ItransR-polyacetylene chains with a disordered distribution of solitonlike defects. The theoretical model adopted is a combination of the negative-factor-counting technique and Austin method 1 calculations. Our results show the presence of extended (conducting) states at the Fermi level that could explain the semiconductor-metal transition for highly doped ItransR-polyacetylene, in accord with the experimentally observed infrared-active vibrational modes.Keywords
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