Anomalous dielectric effect of La/sub 2-x/Sr/sub x/CuO/sub 4/

Masanori Sugahara,Wu, S.-B.,Xiaoyi Han,Lu, H.-F.,Nobuo Haneji,H. Kaneda,Nobuyuki Yoshikawa

Applied Superconductivity, IEEE Transactions（1997）

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摘要

The dielectric response of c-axis oriented La/sub 2-x/Sr/sub x/CuO/sub 4/ film is experimentally studied using Pd/La/sub 2-x/Sr/sub x/CuO/sub 4//(100)SrTiO/sub 3//Pd multi-layer structure. Anomalous capacitance increase is observed at Sr doping level x/spl ap/1/2/sup n/, where the drop of resistivity in bulk La/sub 2-x/Sr/sub x/CuO/sub 4/ in normal state has been reported.

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关键词

capacitance,dielectric thin films,high-temperature superconductors,lanthanum compounds,strontium compounds,superconducting thin films,La/sub 2-x/Sr/sub x/CuO/sub 4/ film,Pd-(LaSr)/sub 2/CuO/sub 4/-SrTiO/sub 3/-Pd,Pd/La/sub 2-x/Sr/sub x/CuO/sub 4//(100)SrTiO/sub 3//Pd multilayer,capacitance,dielectric response,doping,normal state,resistivity

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