Evolution of 4π-Periodic Supercurrent in the Presence of an In-Plane Magnetic Field.

ABSTRACT: In the presence of a 4π-periodic contribution to the current phase relation, for example in topological Josephson junctions, odd Shapiro steps are expected to be missing. While missing odd Shapiro steps have been observed in several material systems and interpreted in the context of topological superconductivity, they have also been observed in topologically trivial junctions. Here, we study the evolution of such trivial missing odd Shapiro steps in Al-InAs junctions in the presence of an in-plane magnetic field B^θ. We find that the odd steps reappear at a crossover B^θ value, exhibiting an in-plane field angle anisotropy that depends on spin-orbit coupling effects. We interpret this behavior by theoretically analyzing the Andreev bound state spectrum and

SUBMITTER: Elfeky BH 

PROVIDER: S-EPMC10018771 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature