论文标题
多个散射在超导（LA，SR）的单晶中伪装成磁条纹$ _ 2 $ CUO $ _4 $
Multiple scattering camouflaged as magnetic stripes in single crystals of superconducting (La,Sr)$_2$CuO$_4$
论文作者
论文摘要
中子衍射一直是研究高温超导体的非常突出的工具，特别是通过发现称为条纹的不均质磁信号。我们在这里报告了超导体（LA，SR）$ _ 2 $ CUO $ _4 $的中子衍射实验的发现，其中伪造信号似乎是磁条纹。发现信号强度很大程度上取决于中子能量，在$ e = 4.6 $ 〜MEV上达到峰值。因此，我们将该信号的来源归因于多个散射和晶体孪生的组合。包括这两种效应的散射强度的正向计算几乎完全恢复了我们的实验观察结果。我们强调需要在寻找避免虚假散射信号的方法时采用这种分析。
Neutron diffraction has been a very prominent tool to investigate high-temperature superconductors, in particular through the discovery of an incommensurate magnetic signal known as stripes. We here report the findings of a neutron diffraction experiment on the superconductor (La,Sr)$_2$CuO$_4$, where a spurious signal appeared to be magnetic stripes. The signal strength was found to be strongly dependent on the neutron energy, peaking at $E = 4.6$~meV. We therefore attribute the origin of this signal to be a combination of multiple scattering and crystal twinning. A forward calculation of the scattering intensity including these two effects almost completely recovers our experimental observations. We emphasise the need for employing such analysis when searching for ways to avoid spurious scattering signals.
