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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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Official URL: http://prb.aps.org/abstract/PRB/v63/i7/e073203

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
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.ernet.in/id/eprint/17166

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