According to a recent theoretical model, Majorana bound states can induce a parity protected superconducting diode effect. Here, we fabricate an array of Nb islands on an intrinsic topological insulator, i.e., a system where Majorana bound states are expected, and observe a strong superconducting diode effect, as well as a superconducting analogue of the optical diffraction grating.
- Xiangyu Song
- Soorya Suresh Babu
- Alexey Bezryadin
