论文标题
丘比特的各向异性时域电子反应
Anisotropic Time-Domain Electronic Response in Cuprates
论文作者
论文摘要
丘陵中的超导性的特征是空间不均匀性和D-Wave对称性的各向异性电子间隙。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。我们比较了与光子能量相当的光子能量与沿样品的Cu-Cu轴相当的光子能量的淋巴结和抗邻次非平衡响应。数据由有效的D波BCS模型支持，表明观察到的超导瞬态信号的增强大多涉及在抗邻近区域中成对相干性的增加，而抗邻近区域未在节点处诱导。
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.
