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Conductive Polymer / High-Tc Superconductor Assemblies

Published online by Cambridge University Press:  15 February 2011

John T. McDevitt ,
Steven G. Haupt ,
David R. Riley ,
Jianai Zhao  and
Christopher T. Jones
John T. McDevitt
Affiliation:
Department of Chemistry & Biochemistry, The University of Texas at Austin, Austin, TX 78712-1167.
Steven G. Haupt
Affiliation:
Department of Chemistry & Biochemistry, The University of Texas at Austin, Austin, TX 78712-1167.
David R. Riley
Affiliation:
Department of Chemistry & Biochemistry, The University of Texas at Austin, Austin, TX 78712-1167.
Jianai Zhao
Affiliation:
Department of Chemistry & Biochemistry, The University of Texas at Austin, Austin, TX 78712-1167.
Christopher T. Jones
Affiliation:
Department of Chemistry & Biochemistry, The University of Texas at Austin, Austin, TX 78712-1167.
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Abstract

The preparation of a hybrid conducting polymer/high-temperature superconductor device consisting of a polypyrrole coated YBa2Cu3O7-δ microbridge is reported. Electrochemical techniques are exploited to alter the oxidation state of the polymer and, in doing so, it is found for the first time that superconductivity can be modulated in a controllable and reproducible fashion by a polymer layer. Whereas the neutral (insulating) polypyrrole only slightly influences the electrical properties of the underlying YBa2Cu3O7-δ film, the oxidized (conductive) polymer depresses Tc by up to 15K. Thus, a new type of molecular switch for controlling superconductivity is demonstrated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 304: Symposium H – Polymer/Inorganic Interfaces , 1993 , 55
Copyright
Copyright © Materials Research Society 1993

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