Conducting polymers at low temperatures and high magnetic fields |
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| Authors: | J C Clark G G Ihas M Reghu C O Yoon A J Heeger Y Cao |
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| Affiliation: | (1) Department of Physics and the Center for Ultralow Temperature Research, University of Florida, 32611 Gainesville, FL, USA;(2) Institute for Polymers and Organic Solids, University of California, USA;(3) Present address: Uniax Corporation, 5375 Overpass Road, 93111 Santa Barbara, CA, USA;(4) Dept. of Physics, Auburn University, 36849-5311 Auburn, AL |
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| Abstract: | Advances in the synthesis of organic conducting polymer systems has increased the electrical conductivity of these systems by several orders of magnitude in the last decade. Several practical applications are envisioned for such systems, but a thorough understanding of the conduction mechanisms and identification of the charge carriers is lacking, making design and implementation for bulk synthesis difficult. In order to clarify our understanding of the electrical properties of these systems, the resistivity and magnetoresistivity of various polymers doped near the metal - insulator transition, such as polyaniline protonated by camphor sulfonic acid (PANi-CSA) and polypyrrole doped with PF6 (PPy-PF6), have been studied down to 25 mK in magnetic fields up to 16 T. |
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