论文标题
稀磁拓扑绝缘子的有限现场传输响应Josephson连接
Finite field transport response of a dilute magnetic topological insulator based Josephson junction
论文作者
论文摘要
将超导体与磁性拓扑绝缘子相结合的混合样品是探索新型新运输物理学的有前途的平台。我们基于稀磁拓扑拓扑器（HG，MN）TE和II型超导体的稀释磁性绝缘子（HG，MN），检查了这种系统的约瑟夫森连接。据我们所知，该设备首次通过磁掺杂的半导体引起超电流，在这种情况下，该设备在零且非常低的场极限中，在这种情况下是拓扑绝缘子。在较高的田地上，揭示了丰富而滞后的磁性。仔细的分析表明，这种行为的解释可以在超导体中的meissner效应引起的磁通量中找到，而无需调用接近性诱导的超导性的任何作用。该现象很重要，因为它将与此类设备中可能存在的任何异国情调的物理学共存。
Hybrid samples combining superconductors with magnetic topological insulators are a promising platform for exploring exotic new transport physics. We examine a Josephson junction of such a system, based on the dilute magnetic topological insulator (Hg,Mn)Te and the type II superconductor MoRe. In the zero and very low field limit, to the best of our knowledge, the device shows, for the first time, induced supercurrent through a magnetically doped semiconductor, in this case a topological insulator. At higher fields, a rich and hysteretic magnetoresistance is revealed. Careful analysis shows that the explanation of this behaviour can be found in magnetic flux focusing stemming from the Meissner effect in the superconductor, without invoking any role of proximity induced superconductivity. The phenomena is important, as it will ubiquitously co-exist with any exotic new physics that may be present in this class of devices.
