论文标题
磁性rashba半学Euaubi中的超导性
Superconductivity in a Magnetic Rashba Semimetal EuAuBi
论文作者
论文摘要
我们报告了在分层的极性半学Euaubi中使用多个磁有序和RASHBA型自旋轨道耦合的超导性观察。在4 K处观察到磁过渡，然后在2.2 K处进行超导过渡，对晶体表面条件敏感。平面外场的9.8 t的上临界场HC2比面板内的临界场高三倍，这可以与二维结构或表面状态相关。根据第一原理的计算，发现特征性的HC2可能通过Rashba型旋转分裂的有效组合和Zeeman Spin Trigpting通过欧盟时刻增强了Fermi表面的各向异性修饰。
We report the observation of superconductivity with multiple magnetic ordering and Rashba-type spin-orbit coupling in a layered polar semimetal EuAuBi. Magnetic transition is observed at 4 K, followed by a superconducting transition at 2.2 K, which is sensitive to the crystal surface conditions. The upper critical field Hc2 of 9.8 T for the out-of-plane field is three times higher than that for the in-plane field, which can be associated with the two-dimensional structure or the surface state. On the basis of first-principles calculations, it is found that the characteristic Hc2 possibly reflects the anisotropic modification of the Fermi surface by the effective combination of Rashba-type spin splitting and Zeeman spin splitting enhanced by Eu moments.
