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Optimal T_c of cuprates: The role of screening and reservoir layers

机译:铜的最佳T_c:筛选和储层的作用

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摘要

We explore the role of charge reservoir layers (CRLs) on the superconducting transition temperature of cuprate superconductors. Specifically, we study the effect of CRLs with efficient short distance dielectric screening coupled capacitively to copper oxide metallic layers. We argue that dielectric screening at short distances and at frequencies of the order of the superconducting gap, but small compared to the Fermi energy can significantly enhance T_c, the transition temperature of an unconventional superconductor. We discuss the relevance of our qualitative arguments to a broader class of unconventional superconductors.
机译:我们探索了电荷储存层(CRL)在铜酸盐超导体超导转变温度上的作用。具体而言,我们研究了通过电容性耦合至氧化铜金属层的高效短距离介电屏蔽实现CRL的效果。我们认为,在短距离和超导间隙量级的频率下进行电介质屏蔽,但是与费米能量相比,电介质屏蔽可以显着提高T_c(非常规超导体的转变温度)。我们讨论了定性论证与更广泛种类的非常规超导体的相关性。

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