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Appl. Sci. 2016, 6(2), 50; doi:10.3390/app6020050

Dynamics of Carrier Transport in Nanoscale Materials: Origin of Non-Drude Behavior in the Terahertz Frequency Range

1,†,* and 2,†
1
Joint Laboratory of Solid State Chemistry, University of Pardubice, Pardubice 530 02, Czech Republic
2
Department of Electrical Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada
The authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 18 November 2015 / Accepted: 27 January 2016 / Published: 14 February 2016
(This article belongs to the Special Issue Frontiers in Terahertz Science and Technology)
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Abstract

It is known that deviation from the Drude law for free carriers is dramatic in most electronically conductive nanomaterials. We review recent studies of the conductivity of nanoscale materials at terahertz (THz) frequencies. We suggest that among a variety of theoretical formalisms, a model of series sequence of transport involving grains and grain boundaries provides a reasonable explanation of Lorentz-type resonance (non-Drude behavior) in nanomaterials. Of particular interest is why do free carriers exhibit a Lorentz-type resonance. View Full-Text
Keywords: nanomaterial; THz spectroscopy; non-Drude transport nanomaterial; THz spectroscopy; non-Drude transport
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Shimakawa, K.; Kasap, S. Dynamics of Carrier Transport in Nanoscale Materials: Origin of Non-Drude Behavior in the Terahertz Frequency Range. Appl. Sci. 2016, 6, 50.

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