Theory for resistive transition in cuprate oxides multilayers

T. Koyama; M. Tachiki

doi:10.1016/0921-4534(92)90883-E

Theory for resistive transition in cuprate oxides multilayers

T. Koyama, M. Tachiki

Institute for Materials Research (IMR)

Research output: Contribution to journal › Article › peer-review

16 Citations (Scopus)

Abstract

We propose a simple theory to explain the broad resistive transition observed in the cuprate oxides multilayers, PrBCO/YBCO/ PrBCO. In this model the proximity-induced superconductivity is assumed in the semiconducting PrBCO films. The transition temperature is reduced as the thickness of the YBCO film decreases. When the YBCO film has a thickness of a few unit cells the superconducting fluctuations are greatly enhanced. We calculate the fluctuation-enhanced conductance of this system, using the "renormalized Gaussian fluctuation approximation". The calculated result for temperature and the YBCO-film-thickness dependence of the resistance is in good agreement with experiments.

Original language	English
Pages (from-to)	163-170
Number of pages	8
Journal	Physica C: Superconductivity and its applications
Volume	193
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(92)90883-E
Publication status	Published - 1992 Apr 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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AU - Tachiki, M.

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N2 - We propose a simple theory to explain the broad resistive transition observed in the cuprate oxides multilayers, PrBCO/YBCO/ PrBCO. In this model the proximity-induced superconductivity is assumed in the semiconducting PrBCO films. The transition temperature is reduced as the thickness of the YBCO film decreases. When the YBCO film has a thickness of a few unit cells the superconducting fluctuations are greatly enhanced. We calculate the fluctuation-enhanced conductance of this system, using the "renormalized Gaussian fluctuation approximation". The calculated result for temperature and the YBCO-film-thickness dependence of the resistance is in good agreement with experiments.

AB - We propose a simple theory to explain the broad resistive transition observed in the cuprate oxides multilayers, PrBCO/YBCO/ PrBCO. In this model the proximity-induced superconductivity is assumed in the semiconducting PrBCO films. The transition temperature is reduced as the thickness of the YBCO film decreases. When the YBCO film has a thickness of a few unit cells the superconducting fluctuations are greatly enhanced. We calculate the fluctuation-enhanced conductance of this system, using the "renormalized Gaussian fluctuation approximation". The calculated result for temperature and the YBCO-film-thickness dependence of the resistance is in good agreement with experiments.

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Theory for resistive transition in cuprate oxides multilayers

Abstract

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