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arXiv 2012.11288cond-mat.supr-concond-mat.str-el
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铜氧化物的各向异性时域电子响应

Anisotropic Time-Domain Electronic Response in Cuprates

Francesca Giusti, Angela Montanaro, Alexandre Marciniak, Francesco Randi, Fabio Boschini, Filippo Glerean, Giacomo Jarc, Hiroshi Eisaki, Martin Greven, Andrea D… 展开作者

Francesca Giusti, Angela Montanaro, Alexandre Marciniak, Francesco Randi, Fabio Boschini, Filippo Glerean, Giacomo Jarc, Hiroshi Eisaki, Martin Greven, Andrea Damascelli, Adolfo Avella, Daniele Fausti

摘要:

铜氧化物的超导电性的特点是空间的不均匀性和各向异性的d波对称的电子间隙。这项工作的目的是了解这种各向异性如何影响高Tc超导体的非平衡电子响应。我们比较了节点和反节点的非平衡响应光激发光子能量可比的超导能隙和极化沿Cu-Cu轴的样品。的数据支持的一个有效的d-波BCS模型表明,所观察到的超导瞬态信号的增强主要涉及增加对相干的波腹区域,这是不是在节点处诱导。

英文摘要:

Superconductivity in the cuprates is characterized by spatial inhomogeneity and an anisotropic electronic gap of d-wave symmetry. The aim of this work is to understand how this anisotropy affects the non-equilibrium electronic response of high-Tc superconductors. We compare the nodal and antinodal non-equilibrium response to photo-excitations with photon energy comparable to the superconducting gap and polarization along the Cu-Cu axis of the sample. The data are supported by an effective d-wave BCS model indicating that the observed enhancement of the superconducting transient signal mostly involves an increase of pair coherence in the antinodal region, which is not induced at the node.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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