Interfering Josephson diode effect in Ta₂Pd₃Te₅ asymmetric edge interferometer.

ABSTRACT: Edge states in topological systems have attracted great interest due to their robustness and linear dispersions. Here a superconducting-proximitized edge interferometer is engineered on a topological insulator Ta₂Pd₃Te₅ with asymmetric edges to realize the interfering Josephson diode effect (JDE), which hosts many advantages, such as the high efficiency as much as 73% at tiny applied magnetic fields with an ultra-low switching power around picowatt. As an important element to induce such JDE, the second-order harmonic in the current-phase relation is also experimentally confirmed by half-integer Shapiro steps. The interfering JDE is also accompanied by the antisymmetric second harmonic transport, which indicates the corresponding asymmetry in the interferom

SUBMITTER: Li Y 

PROVIDER: S-EPMC11489759 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature