TY - JOUR
T1 - Theory for resistive transition in cuprate oxides multilayers
AU - Koyama, T.
AU - Tachiki, M.
N1 - Funding Information:
The authorws ouldl iketo thankH . MatsumotoS,. TakahashiN, . Takezawaa ndY. Narusef or discussions.T his work was supportebdy a Grant-in-Aid from the Ministry of EducationS, ciencea nd Culture,J apan.
PY - 1992/4/1
Y1 - 1992/4/1
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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U2 - 10.1016/0921-4534(92)90883-E
DO - 10.1016/0921-4534(92)90883-E
M3 - Article
AN - SCOPUS:0026850931
VL - 193
SP - 163
EP - 170
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - 1-2
ER -