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AC-DC Conversion Effect in Ceramic Superconductor

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Abstract

The dc voltages(Vdc) induced by an rf current(2–2OMHz), which had been previously interpreted as the reverse ac Josephson effect, were investigated in BaPb1-xBixO3 and YBa2Cu3O7-y, by using second harmonic superposition on the rf current and differential resistance measurement. In both cases, the Vdc is not due to the reverse ac Josephson effect but due to nonlinear current-voltage characteristics. In BaPb1-xBixO3, the nonlinear but symmetric I-V curve is induced by the superconducting transition(≃10 K) and thus the Vdc is observed only at around 10 K. In YBa2Cu3O7-y, local nonlinear resistance near two electrical contacts for potential measurement is responsible for this effect and thus the Vdc is observed over wide temperature range up to 300 K.

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© 1989 Springer Japan

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Ikegawa, S. et al. (1989). AC-DC Conversion Effect in Ceramic Superconductor. In: Kitazawa, K., Ishiguro, T. (eds) Advances in Superconductivity. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68084-0_126

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  • DOI: https://doi.org/10.1007/978-4-431-68084-0_126

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-68086-4

  • Online ISBN: 978-4-431-68084-0

  • eBook Packages: Springer Book Archive

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