论文标题
基于BI0.8SB1.2TE3拓扑绝缘子的超导阵列中的干扰，衍射和二极管效应
Interference, diffraction, and diode effects in superconducting array based on Bi0.8Sb1.2Te3 topological insulator
论文作者
论文摘要
在光学方面，这是一种众所周知的现象，即与仅有两个缝隙的干扰装置相比，衍射光栅的光谱分辨率要好得多，就像Young著名的双缝实验中一样。另一方面，众所周知，经典的超导量子干扰装置（Squid）类似于光学双缝实验。在这里，我们报告了实验并提出了一个描述与衍射光栅的超导类似物的模型，即位于拓扑绝缘体（TI）膜BI0.8SB1.2TE3上的一系列超导岛。在非常弱的场的极限，每个阵列的一个涡流的顺序，此类设备显示出一个临界电流峰，比普通鱿鱼的类似峰更加明显。因此，这种阵列可以用作敏感的绝对磁场传感器。一个重要的发现是，由于这种阵列的固有不对称性，该设备也充当超导二极管。
It is a well known phenomenon in optics that spectroscopic resolution of a diffraction grating is much better compared to an interference device having just two slits, as in the Young's famous double-slit experiment. On the other hand, it is well known that a classical superconducting quantum interference device (SQUID) is analogous to the optical double-slit experiment. Here we report experiments and present a model describing a superconducting analogue to the diffraction grating, namely an array of superconducting islands positioned on a topological insulator (TI) film Bi0.8Sb1.2Te3. In the limit of extremely weak field, of the order of one vortex per the entire array, such devices exhibit a critical current peak that is much sharper than the analogous peak of an ordinary SQUID. Because of this, such arrays can be used as sensitive absolute magnetic field sensors. An important finding is that, due to the inherent asymmetry of such arrays, the device also acts as a superconducting diode.
