| Issue |
Europhys. Lett.
Volume 60, Number 5, December 2002
|
|
|---|---|---|
| Page(s) | 750 - 756 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00372-y | |
| Published online | 01 November 2002 | |
Resonance quantum transport in doped conducting polymers: The improbable becomes possible
1
Department of Physics, The Ohio State University
Columbus, OH 43210-1106, USA
2
Department of Chemistry, The Ohio State University
Columbus, OH 43210-1106, USA
Received:
7
February
2002
Accepted:
23
September
2002
Metallic doped polymers (polyaniline and polypyrrole) have an
electromagnetic response that, when analyzed within the standard
theory of metals, is provided by an extremely small fraction of
the total number of available electrons 
% (in contrast
to 
% for common metals) but with anomalous long
scattering time 
( times longer
than for common metals). We show that a network of metallic
grains (polymer's crystalline domains) connected by resonance
quantum tunneling through localized states in surrounding
disordered medium produces this behavior. The small fraction of
electrons is assigned to the low density of resonance states and
the long scattering time is related to the narrow width of energy
levels in resonance.
PACS: 72.10.Bg – General formulation of transport theory / 73.63.-b – Electronic transport in mesoscopic or nanoscale materials and structures / 72.80.Le – Polymers; organic compounds (including organic semiconductors)
© EDP Sciences, 2002
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