Phonon-induced nonmetal-metal transition of a doped polyaniline

Jinsoo Joo, V. N. Prigodin, Y. G. Min, A. G. MacDiarmid, A. J. Epstein

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

We report the crossover for the microwave dielectric constant of camphor-sulfonic-acid-doped polyaniline prepared in m-cresol from very large room-temperature negative values to large positive ones with decreasing temperature below Ts∼20 K. We attribute this change to the transition from a phonon-controlled metallic state to a nonmetallic state with localized carriers and hopping transport below Ts. Electronically, one-dimensional chains that couple the three-dimensional crystalline regions are likely central for understanding the origin of this transition as weak localization. At T<Ts we also observed an increase in the thermoelectric power and a linear decrease in the reduced activation energy for dc conductivity.

Original languageEnglish
Pages (from-to)12226-12229
Number of pages4
JournalPhysical Review B
Volume50
Issue number16
DOIs
Publication statusPublished - 1994 Dec 1
Externally publishedYes

Fingerprint

Nonmetals
Polyaniline
Transition metals
transition metals
Camphor
camphor
cresols
Sulfonic Acids
sulfonic acid
Thermoelectric power
crossovers
Permittivity
Activation energy
Microwaves
permittivity
activation energy
Crystalline materials
microwaves
conductivity
Temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Joo, J., Prigodin, V. N., Min, Y. G., MacDiarmid, A. G., & Epstein, A. J. (1994). Phonon-induced nonmetal-metal transition of a doped polyaniline. Physical Review B, 50(16), 12226-12229. https://doi.org/10.1103/PhysRevB.50.12226

Phonon-induced nonmetal-metal transition of a doped polyaniline. / Joo, Jinsoo; Prigodin, V. N.; Min, Y. G.; MacDiarmid, A. G.; Epstein, A. J.

In: Physical Review B, Vol. 50, No. 16, 01.12.1994, p. 12226-12229.

Research output: Contribution to journalArticle

Joo, J, Prigodin, VN, Min, YG, MacDiarmid, AG & Epstein, AJ 1994, 'Phonon-induced nonmetal-metal transition of a doped polyaniline', Physical Review B, vol. 50, no. 16, pp. 12226-12229. https://doi.org/10.1103/PhysRevB.50.12226
Joo J, Prigodin VN, Min YG, MacDiarmid AG, Epstein AJ. Phonon-induced nonmetal-metal transition of a doped polyaniline. Physical Review B. 1994 Dec 1;50(16):12226-12229. https://doi.org/10.1103/PhysRevB.50.12226
Joo, Jinsoo ; Prigodin, V. N. ; Min, Y. G. ; MacDiarmid, A. G. ; Epstein, A. J. / Phonon-induced nonmetal-metal transition of a doped polyaniline. In: Physical Review B. 1994 ; Vol. 50, No. 16. pp. 12226-12229.
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