TY - JOUR
T1 - Reversible modulation of superconductivity in YBa2Cu3O7 Ipolypyrrole sandwich structures
AU - Haupt, Steven G.
AU - Riley, David R.
AU - Zhao, Jianai
AU - Thou, Ji Ping
AU - Grassi, James H.
AU - McDevitt, John T.
N1 - Funding Information:
This work was supported by the National Science Foundation, the Texas Advanced Technology
Publisher Copyright:
© 1994 Proceedings of SPIE - The International Society for Optical Engineering. All rights reserved.
PY - 1994/8/10
Y1 - 1994/8/10
N2 - The preparation of a hybrid conducting polymer/high-Temperature superconductor device consisting of a polypyrrole coated YBa2Cu3O7-6 microiridge is reported. Electrochemical techniques are exploited to alter the oxidation state of the polymer and, in doing so, it is found that superconductivity can be modulated in a controllable and reproducible fashion by the polymer layer. Whereas the neutral (insulating) polypyrrole only slightly influences the electrical properties of the underlying YBa2Cu3O7 film, the oxidized (conductive) polymer depresses Tc by up to 50K. The observed reversible shifts in Tc are the largest reported to date. In a similar fashion, the oxithtion state of the polymer is found to reversibly modulate the magnitude of J, the superconducting critical current. Thus, the operation of a molecular/superconductor switch for controlling superconductivity is demonstrated.
AB - The preparation of a hybrid conducting polymer/high-Temperature superconductor device consisting of a polypyrrole coated YBa2Cu3O7-6 microiridge is reported. Electrochemical techniques are exploited to alter the oxidation state of the polymer and, in doing so, it is found that superconductivity can be modulated in a controllable and reproducible fashion by the polymer layer. Whereas the neutral (insulating) polypyrrole only slightly influences the electrical properties of the underlying YBa2Cu3O7 film, the oxidized (conductive) polymer depresses Tc by up to 50K. The observed reversible shifts in Tc are the largest reported to date. In a similar fashion, the oxithtion state of the polymer is found to reversibly modulate the magnitude of J, the superconducting critical current. Thus, the operation of a molecular/superconductor switch for controlling superconductivity is demonstrated.
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U2 - 10.1117/12.182687
DO - 10.1117/12.182687
M3 - Conference article
AN - SCOPUS:85076620280
SN - 0277-786X
VL - 2158
SP - 238
EP - 249
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
T2 - Oxide Superconductor Physics and Nano-Engineering 1994
Y2 - 23 January 1994 through 29 January 1994
ER -