The in-plane anisotropy of the Seebeck ($S$) and Nernst (ν) coefficients of the nearly optimally doped cuprate superconductor ${\mathrm{La}}_{1.86}{\mathrm{Sr}}_{0.14}\mathrm{Cu}{\mathrm{O}}_4$ was measured under uniaxial pressure. Regardless of the qualitative differences between the $S\left(T\right)$ and $\nu \left(T\right)$ dependences, both the Seebeck and Nernst anisotropies evolve very similarly with temperature. Namely, they emerge slightly above the structural transition, then change their character, and eventually sign at the temperature close to the temperature of the pseudogap formation. We conclude that the pseudogap possibly breaks rotational symmetry and we indicate an important role played in this phase by small-angle inelastic scattering.

中文翻译：

---

几乎最佳掺杂的La2-xSrxCuO4超导体中向列伪间隙的提示

Seebeck的面内各向异性（$\mathrm{小号}$最佳掺杂的铜酸盐超导体的）和能斯特（ν）系数${\mathrm{啦}}_{1.86}{\mathrm{r}}_{0.14}铜{\mathrm{Ø}}_4$在单轴压力下测量。不论$\mathrm{小号}（Ť）$ 和 $\nu （Ť）$依赖关系，塞贝克各向异性和能斯特各向异性随温度的变化非常相似。即，它们出现在结构转变的上方，然后改变其特征，并最终在接近伪间隙形成温度的温度下签名。我们得出的结论是伪间隙可能会破坏旋转对称性，并且我们指出了小角度非弹性散射在此阶段中发挥的重要作用。