Revealing topological superconductivity in extended quantum spin Hall Josephson junctions

Abstract

Quantum spin Hall-superconductor hybrids are promising sources of topological superconductivity and Majorana modes, particularly given recent progress on HgTe and InAs/GaSb. We propose a new method of revealing topological superconductivity in extended quantum spin Hall Josephson junctions supporting `fractional Josephson currents'. Specifically, we show that as one threads magnetic flux between the superconductors, the critical current traces an interference pattern featuring sharp fingerprints of topological superconductivity---even when noise spoils parity conservation.

9 pages, 6 figures

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Cited by in corpus (44)

• Gapless Andreev bound states in the quantum spin Hall insulator HgTe
• Edge-mode Superconductivity in a Two Dimensional Topological Insulator
• Supercurrent in the quantum Hall regime
• Transport in two-dimensional topological materials: recent developments in experiment and theory
• Majorana Zero Modes in Graphene
• Signatures of topological Josephson junctions
• Nonlocal Thermoelectricity in a S-TI-S Junction in Contact with a N-Metal Probe: Evidence for Helical Edge States
• Single-edge transport in an InAs/GaSb quantum spin Hall insulator
• Synthetic Weyl Points and Chiral Anomaly in Majorana Devices with Nonstandard Andreev-Bound-State Spectra
• Even-odd flux quanta effect in the Fraunhofer oscillations of an edge-channel Josephson junction
• Thermoelectric transport in junctions of Majorana and Dirac channels
• Quantum interference in topological insulator Josephson junctions
• Proximity-induced superconductivity and Josephson critical current in quantum spin Hall systems
• Topological Majorana Two-Channel Kondo Effect
• Magnetoelectrically-Tunable Andreev-Bound-State Spectra and Spin Polarization in P-Wave Josephson Junctions
• Quench Dynamics of Josephson Current in a Topological Josephson Junction
• Doubled Shapiro Steps in a Topological Josephson Junction
• Quasiparticle poisoning effects on the dynamics of topological Josephson junctions
• Superconducting Quantum Interference in Edge State Josephson Junctions
• Signatures of the Majorana spin in electrical transport through a Majorana nanowire
• Signatures of Jackiw-Rebbi resonance in the thermal conductance of topological Josephson junctions with magnetic islands
• Signatures of Majorana bound states and parity effects in two-dimensional chiral p-wave Josephson junctions
• Microwave studies of the fractional Josephson effect in HgTe-based Josephson junctions
• Edge effects in the magnetic interference pattern of a ballistic SNS junction
• Long-lived Andreev states as evidence for protected hinge modes in a bismuth nanoring Josephson junction
• Survival of the fractional Josephson effect in time-reversal-invariant topological superconductors
• Current-phase relation and $h/e$-periodic critical current of a chiral Josephson contact between 1D Majorana modes
• Majorana fermions on the quantum Hall edge
• Tomography of zero-energy end modes in topological superconducting wires
• Conductance oscillations at the interface between a superconductor and the helical edge channel in a narrow HgTe quantum well
• Supercurrent Reversal in Two-Dimensional Topological Insulators
• 2${\Phi }_0$-periodic magnetic interference in ballistic graphene Josephson junctions
• LAN -- A materials notation for 2D layered assemblies
• Insulating regime of an underdamped current-biased Josephson junction supporting ${\mathbb{Z}}_3$ and ${\mathbb{Z}}_4$ parafermions
• Robustness of Helical Edge States Under Edge Reconstruction
• Protected gap closing in Josephson junctions constructed on Bi${}_2$Te${}_3$ surface
• Effect of Magnetic Field and Rashba Spin-Orbit Interaction on the Josephson Tunneling between Superconducting Nanowires
• Edge supercurrent in Josephson junctions based on topological materials
• Quantum Phase Transitions in Proximitized Josephson Junctions
• Probing Majorana bound states via a pn-junction containing a quantum dot
• Quasiparticle poisoning in trivial and topological Josephson junctions
• Interedge backscattering in time-reversal symmetric quantum spin Hall Josephson junctions
• Tunable effective length of fractional Josephson junctions
• Interference Effect of Beam Splitter Current in Iron-Pnictide Superconductors