The Superconductor/Ionic Conductor Interface at Low Temperatures
作者： W. J. Lorenz , G. Saemann-Ischenko , M. W. Breiter
关键词: Ion 、 Superconductivity 、 Dielectric spectroscopy 、 Fast ion conductor 、 Cooper pair 、 Polarization (electrochemistry) 、 Condensed matter physics 、 Materials science 、 Ionic bonding 、 Charge carrier
摘要: The charge transfer across the interface superconductor/ionic conductor represents a relatively unknown field at present. This paper deals with first electrochemical studies in this area. Both n-type classical and p- high Tc superconductors (HTSC) are considered. Different superionic conductors (Ag β-alumina, Ag + ion conducting glass, RbAg4I5) used as solid electrolytes experiments covering temperature range down to 10 K. A transient technique time domain Electrochemical Impedance Spectroscopy (EIS) frequency study silver deposition Faradaic process these interfaces. results show an admittance peak measurements or corresponding negative of polarization resistance EIS-measurements T ≈ Tc. These findings attributed increase exchange current density around effect is much less on A15 compound than HTSCs. can only be interpreted quantumelectrochemical phenomenon caused by contribution Cooper pairs correlated carriers crossing double layer. proximity-like excluded.
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