Anomalous Josephson Effect in Topological Insulator-Based Josephson Trijunction

Abstract

We studied anomalous Josephson effect (AJE) in Josephson trijunctions fabricated on Bi${}_2$Se${}_3$, and found that the AJE in T-shaped trijunctions significantly alters the Majorana phase diagram of the trijunctions, when an in-plane magnetic field is applied parallel to two of the three single junctions. Such a phenomenon in topological insulator-based Josephson trijunction provides unambiguous evidence for the existence of AJE in the system, and might provide an additional knob for controlling the Majorana bound states in the Fu-Kane scheme of topological quantum computation.

arXiv comment6 pages, 3 figures

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Cited by in corpus (5)

• Anomalous supercurrent and diode effect in locally perturbed topological Josephson junctions
• Hysteresis and chaos in anomalous Josephson junctions without capacitance
• Majorana corner modes and flat-band Majorana edge modes in superconductor/topological-insulator/superconductor junctions
• Originality of resonance and locking phenomena in SFS ${\phi }_0$ Josephson junction
• Gap reopening as a possible signature of coupling between Majorana zero modes in Sn-(Bi,Sb)2(Te,S)3-based Josephson trijunctions