Diode effect in Josephson junctions with a single magnetic atom.

ABSTRACT: Current flow in electronic devices can be asymmetric with bias direction, a phenomenon underlying the utility of diodes¹ and known as non-reciprocal charge transport². The promise of dissipationless electronics has recently stimulated the quest for superconducting diodes, and non-reciprocal superconducting devices have been realized in various non-centrosymmetric systems^3-10. Here we investigate the ultimate limits of miniaturization by creating atomic-scale Pb-Pb Josephson junctions in a scanning tunnelling microscope. Pristine junctions stabilized by a single Pb atom exhibit hysteretic behaviour, confirming the high quality of the junctions, but no asymmetry between the bias directions. Non-reciprocal supercurrents emerge when inserting a single magnetic

SUBMITTER: Trahms M 

PROVIDER: S-EPMC10033399 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature