论文标题
抗铁磁铁 - 螺旋体连接处的电气和热传输
Electrical and Thermal Transport in Antiferromagnet-Superconductor Junctions
论文作者
论文摘要
我们证明，抗铁磁性 - 抗螺旋体（AF-S）连接在质量上与正常的金属螺旋体（N--S）和Ferromagnet-Superconductor（F-S）连接的传输特性在质量上不同。我们将这些传输特征归因于AF-S连接中两个新的散射过程的存在，即镜面反射和电子的反射。使用Blonder-Tinkham-klapwijk形式主义，我们发现电气和热电导率在非试验上取决于抗铁磁交换强度。此外，我们表明Néel矢量方向与界面Rashba旋转轨道耦合之间的相互作用导致较大的各向异性磁磁性。不寻常的运输属性使AF-S接口在传统的基于系统的超导连接之间是独特的。
We demonstrate that antiferromagnet-superconductor (AF-S) junctions show qualitatively different transport properties than normal metal-superconductor (N--S) and ferromagnet-superconductor (F-S) junctions. We attribute these transport features to presence of two new scattering processes in AF--S junctions, i.e., specular reflection of holes and retroreflection of electrons. Using the Blonder-Tinkham-Klapwijk formalism, we find that the electrical and thermal conductance depend nontrivially on antiferromagnetic exchange strength. Furthermore, we show that the interplay between the Néel vector direction and the interfacial Rashba spin-orbit coupling leads to a large anisotropic magnetoresistance. The unusual transport properties make AF--S interfaces unique among the traditional condensed-matter-system-based superconducting junctions.
