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首页> 外文期刊>Scientific reports. >Quasiparticle self-consistent GW study of cuprates: electronic structure, model parameters, and the two-band theory for Tc
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Quasiparticle self-consistent GW study of cuprates: electronic structure, model parameters, and the two-band theory for Tc

机译：铜酸盐的拟粒子自洽 GW 研究：T c 的电子结构，模型参数和两波段理论

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Despite decades of progress, an understanding of unconventional superconductivity still remains elusive. An important open question is about the material dependence of the superconducting properties. Using the quasiparticle self-consistent GW method, we re-examine the electronic structure of copper oxide high-T c materials. We show that QSGW captures several important features, distinctive from the conventional LDA results. The energy level splitting between and is significantly enlarged and the van Hove singularity point is lowered. The calculated results compare better than LDA with recent experimental results from resonant inelastic xray scattering and angle resolved photoemission experiments. This agreement with the experiments supports the previously suggested two-band theory for the material dependence of the superconducting transition temperature, T c .
机译：尽管取得了数十年的进步，但对非常规超导性的理解仍然难以捉摸。一个重要的悬而未决的问题是关于超导特性的材料依赖性。使用准粒子自洽GW方法，我们重新检查了氧化铜高T c 材料的电子结构。我们显示QSGW捕获了几个重要特征，这些特征与常规LDA结果不同。在和之间的能级分配显着扩大，而van Hove奇异点降低。与共振非弹性X射线散射和角度分辨光发射实验的最新实验结果相比，计算结果比LDA更好。与实验的一致性支持了先前提出的关于超导转变温度T c 的材料依赖性的两带理论。

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