Strongly correlated superconductivity with long-range spatial fluctuations

Strongly correlated superconductivity with long-range spatial fluctuations
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超导性与长程空间涨落强相关

DOI:
10.1088/2515-7639/ac7e6d
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发表时间:
2022
期刊:
Journal of Physics: Materials
影响因子:
--
通讯作者:
Held Karsten
Held Karsten
中科院分区:
--
文献类型:
--
作者:
Kitatani Motoharu;Arita Ryotaro;Schaefer Thomas;Held Karsten

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我们回顾了最近使用动态平均场理论的图解扩展对超导性的研究。这些方法同时考虑了局部相关效应和空间长程涨落,这对于描述准二维平面中的非常规超导性至关重要。结果再现并预测了强相关系统(例如铜酸盐和镍酸盐)的实验相图。进一步的研究表明,配对相互作用顶点的动态筛选效应对转变温度具有显着的影响,甚至可能支持奇数频率配对等奇异机制。我们还讨论了层状材料的维数以及如何解释二维的数值结果。
We review recent studies for superconductivity using diagrammatic extensions of dynamical mean field theory. These approaches take into account simultaneously both, the local correlation effect and spatial long-range fluctuations, which are essential to describe unconventional superconductivity in a quasi-two-dimensional plane. The results reproduce and predict the experimental phase diagrams of strongly correlated system such as cuprates and nickelates. Further studies reveal that the dynamical screening effect of the pairing interaction vertex has dramatic consequences for the transition temperature and may even support exotic mechanisms like odd-frequency pairing. We also discuss the dimensionality of layered materials and how to interpret the numerical results in two dimensions.
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影响因子: --
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