Observation of a Majorana zero mode in a topologically protected edge channel

Abstract

Superconducting proximity pairing in helical edge modes, such as those of topological insulators (TI), is predicted to provide a unique platform for realizing Majorana zero modes (MZMs). We use scanning tunneling microscopy measurements to probe the influence of proximity induced superconductivity and magnetism on the helical hinge states of Bi(111) films, grown on a superconducting Nb substrate and decorated with magnetic Fe clusters. Consistent with model calculations, our measurements reveal the emergence of a localized MZM at the interface between the superconducting helical edge channel and the Fe clusters with strong magnetization component along the edge. Our experiments also resolve the MZM spin signature that distinguishes it from trivial in-gap states that may accidently occur at zero energy in a superconductor.

References in corpus (17)

• Non-Abelian Anyons and Topological Quantum Computation
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Electric Multipole Moments, Topological Multipole Moment Pumping, and Chiral Hinge States in Crystalline Insulators
• Majorana bound states in a coupled quantum-dot hybrid-nanowire system
• $(d-2)$-dimensional edge states of rotation symmetry protected topological states
• Reflection symmetric second-order topological insulators and superconductors
• Observation of the Quantum Spin Hall Effect up to 100 Kelvin in a Monolayer Crystal
• Quantum Spin Hall Effect and Enhanced Magnetic Response by Spin-Orbit Coupling
• Scaling of Majorana Zero-Bias Conductance Peaks
• One-dimensional Topological Edge States of Bismuth Bilayers
• Majorana qubit decoherence by quasiparticle poisoning
• Zero-energy vortex bound state in the superconducting topological surface state of Fe(Se,Te)
• Distinguishing a Majorana zero mode using spin resolved measurements
• Observation of a Majorana zero mode in a topologically protected edge channel
• Strong localization of Majorana end states in chains of magnetic adatoms

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