Quantum anomalous vortex and Majorana zero mode in iron-based superconductor Fe(Te,Se)

Abstract

In topological insulators doped with magnetic ions, spin-orbit coupling and ferromagnetism give rise to the quantum anomalous Hall effect. Here we show that in s-wave superconductors with strong spin-orbit coupling, magnetic impurity ions can generate topological vortices in the absence of external magnetic fields. Such vortices, dubbed quantum anomalous vortices, support robust Majorana zero-energy modes when superconductivity is induced in the topological surface states. We demonstrate that the zero-energy bound states observed in Fe(Te,Se) superconductors are possible realizations of the Majorana zero modes in quantum anomalous vortices produced by the interstitial magnetic Fe. The quantum anomalous vortex matter not only advances fundamental understandings of topological defect excitations of Cooper pairing, but also provides new and advantageous platforms for manipulating Majorana zero modes in quantum computing.

final version, 8 pages, 3 figures + supplemental material

References in corpus (23)

• Non-Abelian Anyons and Topological Quantum Computation
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Evidence for Majorana bound state in an iron-based superconductor
• Observation of topological superconductivity on the surface of an iron-based superconductor
• Quantized Majorana conductance
• Multichannel Generalization of Kitaev's Majorana End States and a Practical Route to Realize Them in Thin Films
• Multiple topological states in iron-based superconductors
• Observation of a Robust Zero-energy Bound State in Iron-based Superconductor Fe(Te,Se)
• Observation of two distinct $d_{xz}/d_{yz}$ band splittings in FeSe
• Discrete energy levels of Caroli-de Gennes-Martricon states in quantum limit due to small Fermi energy in FeTe${}_{0.55}$Se${}_{0.45}$
• Magnetic response of mesoscopic superconducting rings with two order parameters
• Measurement-Only Topological Quantum Computation via Anyonic Interferometry
• Orbital Angular Momentum and Spectral Flow in Two Dimensional Chiral Superfluids
• Microscopic Structure of a Vortex Line in a Superfluid Fermi Gas
• Muon-spin-spectroscopy study of the penetration depth of FeTe0.5Se0.5
• Coupling and braiding Majorana bound states in networks defined in proximitized two-dimensional electron gases
• Stabilizing fractional vortices in multiband superconductors with periodic pinning arrays
• FeTe${}_{0.55}$Se${}_{0.45}$: a multiband superconductor in the clean and dirty limit
• Optical properties of the iron-chalcogenide superconductor FeTe0.55Se0.45

Cited by in corpus (49)

• Exotic Superconducting States in FeSe-based Materials
• Spin-polarized Yu-Shiba-Rusinov states in an iron based superconductor
• Topological quantum states of matter in iron-based superconductors: From concepts to material realization
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• Observation of magnetic adatom-induced Majorana vortex and its hybridization with field-induced Majorana vortex in an iron-based superconductor
• Crystalline symmetry protected helical Majorana modes in the iron pnictides
• Zero-energy bound states in the high-temperature superconductors at the two-dimensional limit
• Vortex-line topology in iron-based superconductors with and without second-order topology
• Topological Superconductivity in an s-wave Superconductor and Its Implication to Iron-based Superconductors
• Field-free platform for topological zero-energy mode in superconductors LiFeAs and PbTaSe${}_2$
• Topological Superconductivity Induced by Magnetic Texture Crystals
• Robustness of the Kondo effect in a quantum dot coupled to Majorana zero modes
• Topological orders competing for the Dirac surface state in FeSeTe surfaces
• Vortex Majorana braiding in a finite time
• Effect of Zeeman coupling on the Majorana vortex modes in iron-based topological superconductors
• Near zero-energy Caroli-de Gennes-Matricon vortex states in the presence of impurities
• Emergent vortex Majorana zero mode in iron-based superconductors
• Surface Bogoliubov-Dirac cones and helical Majorana hinge modes in superconducting Dirac semimetals
• Twisted magnetic topological insulators
• Topological classification of intrinsic 3D superconductors using anomalous surface construction
• Observation of robust zero-energy state and enhanced superconducting gap in a tri-layer heterostructure of MnTe/Bi2Te3/Fe(Te, Se)
• Majorana phase-gate based on the geometric phase
• Direct observation of quantum anomalous vortex in Fe(Se,Te)
• Zero-Energy Modes on Superconducting Bismuth Islands Deposited on Fe(Te,Se)
• Probing electron-hole weights of an Andreev bound state by transient currents
• Interacting Valley Chern Insulator and its Topological Imprint on Moiré Superconductors
• Statistical Majorana Bound State Spectroscopy
• Observation of in-gap states in a two-dimensional CrI2/NbSe2 heterostructure
• Unveiling non-Abelian statistics of vortex Majorana bound states in iron-based superconductors using fermionic modes
• Nature of the Dirac gap modulation and surface magnetic interaction in axion antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Majorana zero modes in a magnetic and superconducting hybrid vortex
• FeTe${}_{0.55}$Se${}_{0.45}$ van der Waals Tunneling Devices
• Yu-Shiba-Rusinov states in a superconductor with topological Z2 bands
• Ferromagnetic Impurity Induced Majorana Zero Mode in Iron-Based Superconductor
• Anomalous Shiba states in topological iron-based superconductors
• Planar magnetic texture on the surface of a topological insulator
• The Peripheral Vortex Biome of Confined Quantum Fluids and Its Influence on Vortex Pair Annihilation
• Photo-induced Multiply Quantized Vortex States in Dirac-like Materials
• Anomalous Shiba spectrum and superconductivity induced magnetic interactions in materials with topological band inversion
• Topological superconductor from superconducting topological surface states and fault-tolerant quantum computing
• Phase transitions in quantum dot-Majorana zero mode coupling systems
• Linear scaling relation between two-dimensional massless Dirac fermion Fermi velocity and Fe-As bond length in iron arsenide superconductor systems
• Equilibrium current vortices in rare-earth-doped simple metals
• Inversion-symmetric Electron Gases as New Platforms for Topological Planar Josephson Junctions
• Majorana Zero Modes and Topological Nature in Bi2Ta3S6-family Superconductors
• Intrinsic chiral topological superconductor thin films
• Anomalous currents and spontaneous vortices in spin-orbit coupled superconductors
• Detecting and Distinguishing Majorana Zero Modes with the Scanning Tunneling Microscope
• A mesoscopic device for a realization of the Topological Kondo effect