Experimental realization of SQUIDs with topological insulator junctions

M. Veldhorst, C. G. Molenaar, X. L. Wang +2

We demonstrate topological insulator (Bi${}_2$Te${}_3$) dc SQUIDs, based on superconducting Nb leads coupled to nano-fabricated Nb-Bi${}_2$Te${}_3$-Nb Josephson junctions. The high reprodu…