论文标题
II型超导体中波动涡流产生的旋转厅效应
Spin Hall effect generated by fluctuating vortices in type-II superconductors
论文作者
论文摘要
我们从理论上研究了涡旋旋转霍尔效应，即，通过关注超导波动的作用，是由超导涡流运动驱动的新型自旋效应。在BCS-Gor'kov显微镜方法与Kubo公式相结合的情况下，我们发现涡旋旋转霍尔效应与涡流nernst/ettingshausen效应之间存在很强的相似性。由于反涡流旋转霍尔效应引起的电压信号的计算温度依赖性表现出涡流波动的强大增强。该结果不仅为旋转seebeck效应中的突出峰提供了可能的解释，该峰在NBN/y $ _3 $ _3 $ _3 $ _5 $ o $ _ {12} $系统中，而且还导致使用其他具有强大波动的超导体（例如Cubrate或Iraled基于Cubrate或基于CUBRATE或基于铁的超级负责人）的新实验的建议。
We theoretically investigate the vortex spin Hall effect, i.e., a novel spin Hall effect driven by the motion of superconducting vortices, by focusing on the role of superconducting fluctuations. Within the BCS-Gor'kov microscopic approach combined with the Kubo formula, we find a strong similarity between the vortex spin Hall effect and the vortex Nernst/Ettingshausen effect. Calculated temperature dependence of the voltage signal due to the inverse vortex spin Hall effect exhibits a strong enhancement by vortex fluctuations. This result not only provides a possible explanation for a prominent peak found in the spin Seebeck effect in a NbN/Y$_3$Fe$_5$O$_{12}$ system, but also leads to a proposal of new experiments using other superconductors with strong fluctuations, such as cuprate or iron-based superconductors.
