论文标题
由SB掺杂的BI2SE3拓扑绝缘子Nanoribbons制成的超导量子干扰设备
Superconducting Quantum Interference Devices Made of Sb-doped Bi2Se3 Topological Insulator Nanoribbons
论文作者
论文摘要
我们报告了由掺杂SB的BI2SE3拓扑绝缘子（TI）纳米替伯（NR）与PBIN超导电极接触的超导量子干扰装置（鱿鱼）的制造和表征。当沿着NR轴施加外部磁场时，TI NR表现出周期性的磁电导振荡，由于一维子带，所谓的Aharonov-BOHM振荡。在PBIN电极的超导过渡温度下方，我们观察到了基于Ti NR的鱿鱼的超电流。临界电流在垂直于鱿鱼环的磁场上定期调节，表明周期性对应于超导通量量子。我们的实验观察结果可用于探索TI NR中的主要结合状态（MB），这有望开发拓扑量子信息设备。
We report the fabrication and characterization of superconducting quantum interference devices (SQUIDs) made of Sb-doped Bi2Se3 topological insulator (TI) nanoribbon (NR) contacted with PbIn superconducting electrodes. When an external magnetic field was applied along the NR axis, the TI NR exhibited periodic magneto-conductance oscillations, the so-called Aharonov-Bohm oscillations, owing to one-dimensional subbands. Below the superconducting transition temperature of PbIn electrodes, we observed supercurrent flow through TI NR-based SQUID. The critical current periodically modulates with a magnetic field perpendicular to the SQUID loop, revealing that the periodicity corresponds to the superconducting flux quantum. Our experimental observations can be useful to explore Majorana bound states (MBS) in TI NR, promising for developing topological quantum information devices.
