Metallic state in disordered quasi-one-dimensional conductors

Martens, HCF and Reedijk, JA and Brom, HB and de Leeuw, DM and Menon, R (2001) Metallic state in disordered quasi-one-dimensional conductors. In: Physical Review B, 6307 (7). 63 073203-1.

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Abstract

The metallic state in conjugated polymers and single-walled carbon nanotubes: is studied by dielectric spectroscopy (8-600 GHz). We have found an intriguing correlation between scattering time (tau) and plasma frequency (omega (p)):tau (proportional to)omega (-1.3)(p). This relation conflicts with the usually applied models that only consider disorder. Based on the observed parallels with doped semiconductors, we argue that the interchain coupling t(perpendicular to) plays a role comparable to the doping level and that the unusual free-carrier dynamics in the metallic state can be explained when including the role of t(perpendicular to) in the conventional models.

Item Type:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical Society
Additional Information:	Copyright of this article belongs to American Physical Society.
Keywords:	Insulator-Transition;Optical-Properties;Charge-Transport;Carbon Nanotubes;Conductivity; Reflectance;Polypyrrole;Pb
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	10 Feb 2010 06:49
Last Modified:	19 Sep 2010 04:55
URI:	http://eprints.iisc.ac.in/id/eprint/17166

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