Affordable Access

Publisher Website

Hopping transport in HCl doped conducting polyaniline

Authors
Journal
Physics Letters A
0375-9601
Publisher
Elsevier
Publication Date
Volume
260
Identifiers
DOI: 10.1016/s0375-9601(99)00501-0
Keywords
  • Polyaniline
  • Doping
  • Electrical Conductivity
  • Magnetic Field

Abstract

Abstract The present work includes a study on the transport property based on the measurement of the electrical conductivity of HCl doped conducting polyaniline in the presence as well as in the absence of a magnetic field in the temperature range 1.8 K≤ T≤300 K. It has been observed that the conductivity of the samples increases with increasing temperature and the conductivity ratio [ r= σ(300 K)/ σ(1.8 K)] is large for the sample having higher dopant concentration. A crossover from Mott ( T −1/4) to Efros–Shklovskii (ES) ( T −1/2) in temperature dependent conductivity of the samples is observed at 10 K. In the presence of a magnetic field the electrical conductivity varies as T −3/4. From the plot of conductivity versus temperature, different physical quantities like density of states, molecular vibrational frequency, hopping distance and localization length have been determined.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Low temperature transport properties of Cl-doped c...

on Journal of Physics and Chemist... Jan 01, 2001
More articles like this..