Superconductive Coupling Effects in Selectively Grown Topological Insulator-Based Three-Terminal Junctions.

ABSTRACT: The combination of an ordinary s-type superconductor with three-dimensional topological insulators creates a promising platform for fault-tolerant topological quantum computing circuits based on Majorana braiding. The backbone of the braiding mechanism are three-terminal Josephson junctions. It is crucial to understand the transport in these devices for further use in quantum computing applications. We present low-temperature measurements of topological insulator-based three-terminal Josephson junctions fabricated by a combination of selective-area growth of Bi_0.8Sb_1.2Te₃ and shadow mask evaporation of Nb. This approach allows for the in situ fabrication of Josephson junctions with an exceptional interface quality, important for the study of the proximity-e

SUBMITTER: Behner G 

PROVIDER: S-EPMC11781021 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature