Tunable vortex Majorana modes controlled by strain in homogeneous LiFeAs

Abstract

The iron-based superconductors (FeSCs) have recently emerged as a promising single-material Majorana platform by hosting isolated Majorana zero modes (MZMs) at relatively high temperatures. To further verify its Majorana nature and move forward to build topological quantum qubit, it is highly desirable to achieve tunability for MZMs on homogeneous FeSCs. Here, with an in-situ strain device, we can controllably create MZMs on the homogeneous surface of stoichiometric superconductor LiFeAs by inducing a topological phase transition. The evolution of discrete energy modes inside a strained vortex is found to mimics exactly as the predicted topological vortex case, proving the Majorana nature of emerging zero modes of vortex. Such tunability of MZMs in a homogeneous superconductor is an important step toward their application in topological quantum computation.

References in corpus (39)

• Fault-tolerant quantum computation by anyons
• Non-Abelian Anyons and Topological Quantum Computation
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Unpaired Majorana fermions in quantum wires
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries, and the fractional quantum Hall effect
• Helical liquids and Majorana bound states in quantum wires
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Majorana bound states in a coupled quantum-dot hybrid-nanowire system
• The superconductivity at 18 K in LiFeAs system
• Evidence for Majorana bound state in an iron-based superconductor
• Observation of topological superconductivity on the surface of an iron-based superconductor
• Observation of Majorana fermions with spin selective Andreev reflection in the vortex of topological superconductor
• Chiral Majorana edge state in a quantum anomalous Hall insulator-superconductor structure
• Fermion zero modes on vortices in chiral superconductors
• Multichannel Generalization of Kitaev's Majorana End States and a Practical Route to Realize Them in Thin Films
• Superconductivity without magnetism in LiFeAs
• Topological nature of FeSe${}_{0.5}$Te${}_{0.5}$ superconductor
• Zero-energy vortex bound state in the superconducting topological surface state of Fe(Se,Te)
• Topological superconductivity on the surface of Fe-based superconductors
• Multiple topological states in iron-based superconductors
• Nearly quantized conductance plateau of vortex zero mode in an iron-based superconductor
• Observation of half-integer level shift of vortex bound states in an iron-based superconductor
• Piezoelectric-based apparatus for strain tuning
• Braiding without Braiding: Teleportation-Based Quantum Information Processing with Majorana Zero Modes
• Topological Characters in Fe(Te${}_{1-x}$Se${}_x$) thin films
• Scanning Tunneling Microscopy/Spectroscopy of Vortices in LiFeAs
• Search for non-Abelian Majorana braiding statistics in superconductors
• A new Majorana platform in an Fe-As bilayer superconductor
• Scalable Majorana vortex modes in iron-based superconductors
• Quantized conductance of Majorana zero mode in the vortex of the topological superconductor (Li0.84Fe0.16)OHFeSe
• Tunable vortex Majorana zero modes in LiFeAs superconductor
• Crystalline symmetry protected helical Majorana modes in the iron pnictides
• Quasi 1D topological nodal vortex line phase in doped superconducting 3D Dirac Semimetals
• Discovery of a strain-stabilised smectic electronic order in LiFeAs
• Two distinct superconducting states controlled by orientation of local wrinkles in LiFeAs
• Quantum phase transition of correlated iron-based superconductivity in LiFe${}_{1-x}$Co${}_x$As
• Towards a quantitative description of tunneling conductance of superconductors: application to LiFeAs
• Emergent vortex Majorana zero mode in iron-based superconductors

Cited by in corpus (6)

• Theoretical proposal to obtain strong Majorana evidence from scanning tunneling spectroscopy of a vortex with a dissipative environment
• Fe${}_{1+y}$Te${}_x$Se${}_{1-x}$: a delicate and tunable Majorana material
• Deterministic topological quantum gates for Majorana qubits without ancillary modes
• Dual Enhancement of Superconductivity in FeSe/SrTiO3 via Orbital and Correlation Synergy
• Majorana vortex phases in time-reversal invariant higher-order topological insulators and topologically trivial insulators
• The construction of a universal quantum gate set for the $\mathrm{SU}(2{)}_k$ $(k=5,6,7)$ anyon models via genetic optimized algorithm