Anomalous supercurrent and diode effect in locally perturbed topological Josephson junctions

• DOI: 10.1063/5.0210660
• Publication Date: 2024-06-10T09:54:43Z
• Authors: Samuele Fracassi; Simone Traverso; Niccolo Traverso ...; Matteo Carrega; Stefan Heun; Maura Sassetti
• Keywords: Supercurrent

The simultaneous breaking of time-reversal and inversion symmetry can lead to peculiar effects in Josephson junctions, such as the anomalous effect or supercurrent rectification, which is a dissipationless analog diode effect. Due their impact new quantum technologies, it important find robust platforms external means manipulate above controlled way. Here, we theoretically consider junction based on spin Hall system normal channel, subjected magnetic field direction defined by spin-momentum locking, presence local tip close proximity one metallic edges region. We different perturbations, model tips, study how they affect response device. In particular, argue that tips are useful tool allows for tunability both $\phi_0$ rectification.