Possible quantumelectrochemical effects on high T C  superconductors

Pinkowski, A.; Doneit, J.; Jüttner, K.; Lorenz, W.J.; Saemann‐Ischenko, G.; Zetterer, T.; Bréiter, M.W.

doi:10.1016/0921-4534(89)90582-0

Cited by 11 publications

(2 citation statements)

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“…We have peculated (17,18) that electrochemical reactions at superonducting interfaces may exhibit special and previously unknown characteristics owing to the existence and possible transfer of paired electrons at the interface between a superconducting and "normal" molecular phase. The groups of Lorenz and Saemann-Ischenko (20)(21)(22)(23)(24) are also interested in such prospects and, indeed, have reported both electrode reaction rate and capacitance changes at the interfaces of superconductor electrodes with Ag § solid electrolytes that occur at To. The groups of Lorenz and Saemann-Ischenko (20)(21)(22)(23)(24) are also interested in such prospects and, indeed, have reported both electrode reaction rate and capacitance changes at the interfaces of superconductor electrodes with Ag § solid electrolytes that occur at To.…”

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“…Additionally, electrified superconducting/electrolyte solution interfaces may exhibit space charge characteristics different from those associated with ordinary conductor/electrolyte interfaces. The groups of Lorenz and Saemann-Ischenko (20)(21)(22)(23)(24) are also interested in such prospects and, indeed, have reported both electrode reaction rate and capacitance changes at the interfaces of superconductor electrodes with Ag § solid electrolytes that occur at To. A partial theory has been offered by Kuznetzov (25).…”

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Preparation, Characterization and Room Temperature Electrochemical Response of Bi2Sr2CaCu2 O 8 Superconductor Microband Electrodes

McDevitt

Murray

Shah

1991

J. Electrochem. Soc.

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Fabrication of a well-behaved superconductor microband electrode fashioned from the edges of thin films of Bi2Sr2CaCu~O8 sandwiched between two insulating layers is demonstrated. In room temperature solutions of redox species, these microbands exhibit well-defined voltammograms and currents interpretable by standard microband electrode theory. The behavior of freshly cleaved electrodes indicates preparation of reasonably pristine surfaces. The new superconductor electrode geometry along with the recently reported fluid electrolyte cryosolvent will be useful in the context of future experiments with superconductor electrodes at temperatures below their T~ values. The first results for doublelayer capacitance of a superconductor/electrolyte solution interface are also provided. ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 128.192.114.19 Downloaded on 2015-06-20 to IP

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confidence: 99%

Preparation, Characterization and Room Temperature Electrochemical Response of Bi2Sr2CaCu2 O 8 Superconductor Microband Electrodes

McDevitt

Murray

Shah

1991

J. Electrochem. Soc.

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Electrochemistry of Oxide High‐Temperature Superconductors

Петрий

Tsirlina

1997

Advances in Electrochemical Sciences and Engineering

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The Superconductor/Ionic Conductor Interface at Low Temperatures

Lorenz

Saemann‐Ischenko

Bréiter

1991

Ber Bunsenges Phys Chem

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The charge transfer across the interface superconductor/ionic conductor represents a relatively unknown field at present. This paper deals with the first electrochemical studies in this area. Both n‐type classical and p‐ and n‐type high Tc superconductors (HTSC) are considered. Different superionic conductors (Ag β‐alumina, Ag + ion conducting glass, and RbAg4I5) are used as solid electrolytes in experiments covering a temperature range down to 10 K. A transient technique in the time domain and Electrochemical Impedance Spectroscopy (EIS) in the frequency domain are used to study the silver deposition as Faradaic charge transfer process at these interfaces. The results show an admittance peak in transient measurements or a corresponding negative peak of the polarization resistance in EIS‐measurements at T ≈ Tc. These findings are attributed to an increase of the exchange current density around Tc. The effect is much less on an A15 compound than on HTSCs. The effect can only be interpreted as a quantumelectrochemical phenomenon caused by the contribution of Cooper pairs as correlated charge carriers crossing the electrochemical double layer. A proximity‐like phenomenon can be excluded.

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Possible quantumelectrochemical effects on high T C superconductors

Cited by 11 publications

References 1 publication

Preparation, Characterization and Room Temperature Electrochemical Response of Bi2Sr2CaCu2 O 8 Superconductor Microband Electrodes

Preparation, Characterization and Room Temperature Electrochemical Response of Bi2Sr2CaCu2 O 8 Superconductor Microband Electrodes

Electrochemistry of Oxide High‐Temperature Superconductors

The Superconductor/Ionic Conductor Interface at Low Temperatures

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