Doping-dependent studies of the Anderson-Mott localization in polyaniline at the metal-insulator boundary

Tzamalis, G.; Zaidi, N.A.; Homes, C.C.; Monkman, A.P.

Abstract

Temperature-dependent dc conductivity measurements and infrared reflectivity measurements (20–9000 cm−1) were performed on a series of polyaniline samples with two different dopant acids at various doping levels. The typical fingerprints of a disordered metal such as a positive temperature coefficient of resistivity at high temperatures, a very high reflectivity in the far infrared, and a plasma resonance have been observed. The results were analyzed in the framework of the Anderson-Mott localization model and considerable consistency between transport studies and optical measurements was obtained. Various parameters enabling a comparative classification of the materials are also reported.

Citation

Tzamalis, G., Zaidi, N., Homes, C., & Monkman, A. (2002). Doping-dependent studies of the Anderson-Mott localization in polyaniline at the metal-insulator boundary. Physical review B, 66(8), Article 085202. https://doi.org/10.1103/physrevb.66.085202

• Journal Article Type: Article
• Publication Date: Aug 5, 2002
• Deposit Date: Jul 30, 2015
• Publicly Available Date: Jul 31, 2015
• Journal: Physical review B - Condensed Matter and Materials Physics
• Print ISSN: 1098-0121
• Electronic ISSN: 1550-235X
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 66
• Issue: 8
• Article Number: 085202
• DOI: https://doi.org/10.1103/physrevb.66.085202
• Public URL: https://durham-repository.worktribe.com/output/1585093
• Related Public URLs: http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2002PhRvB..66h5202T&db_key=PHY