Departmental Papers (ESE)

Abstract

A highly disordered pregraphitic carbon nanofiber with the product of its quasi-Fermi wave vector and mean free path close to 1 was fabricated using electrospinning technique. Strong localization made the conductivity vary with temperature as σ [proportional to]Τ-1/2 from 300 to 5 K, suggesting variable range hopping as the conductivity mechanism, and resulted in a large negative magnetoresistance from 300 K down to 1.9 K that can still be quantitatively described using weak localization and electron interaction models.

Document Type

Journal Article

Date of this Version

September 2006

Comments

Postprint version. Published in Applied Physics Letters, Volume 89, Issue 12, Article 123119, September 2006, 3 pages.
Publisher URL: http://dx.doi.org/10.1063/1.2338573

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Date Posted: 07 December 2006

This document has been peer reviewed.