Electrostatic effects of the MnBi2Te4-superconductor hetero-structures in chiral Majorana search

Abstract

The realization of chiral Majorana modes is a challenging task. We aim to comprehend the phase diagrams and parameter control capabilities of the actual devices used in the chiral Majorana search. Beyond the well-known minimal models, we develop a numerical simulation scheme using a self-consistent Schrodinger-Poisson approach to study, as an example, the MnBi2Te4 thin film coupled to an s-wave superconductor. We show that both the superconducting proximity effect and the tunability of the chemical potential for the topological surface states are significantly influenced by the gate-induced electrostatic potential. This complicates the implementation in experiments, and the actual topological region will be narrowed in stark contrast to those predicted in the previous minimal models. Nevertheless, we demonstrate that the chiral Majorana mode still exists in a wide range of experimental parameters with practical tunability.

arXiv comment11 pages, 9 figures

References in corpus (68)

• 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
• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• Paired states of fermions in two dimensions with breaking of parity and time-reversal symmetries, and the fractional quantum Hall effect
• Classification of topological insulators and superconductors in three spatial dimensions
• Topological Field Theory of Time-Reversal Invariant Insulators
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBi${}_2$Te${}_4$
• Crossover of Three-Dimensional Topological Insulator of Bi2Se3 to the Two-Dimensional Limit
• Chern Numbers in Discretized Brillouin Zone: Efficient Method of Computing (Spin) Hall Conductances
• Prediction and observation of the first antiferromagnetic topological insulator
• Intrinsic magnetic topological insulators in van der Waals layered MnBi${}_2$Te${}_4$-family materials
• Topological quantization of the spin Hall effect in two-dimensional paramagnetic semiconductors
• Topological axion states in magnetic insulator MnBi${}_2$Te${}_4$ with the quantized magnetoelectric effect
• Robust axion insulator and Chern insulator phases in a two-dimensional antiferromagnetic topological insulator
• Quantum Anomalous Hall Effect in Hg${}_{1-y}$Mn${}_y$Te Quantum Wells
• Topological Superconductivity and Superfluidity
• Experimental realization of an intrinsic magnetic topological insulator
• Observation of Majorana fermions with spin selective Andreev reflection in the vortex of topological superconductor
• Majorana mode in vortex core of Bi2Te3/NbSe2 topological insulator-superconductor heterostructure
• The Coexistence of Superconductivity and Topological Order in the Bi2Se3 Thin Films
• Chiral Topological Superconductor From the Quantum Hall State
• Chiral Majorana edge state in a quantum anomalous Hall insulator-superconductor structure
• Theory of the topological Anderson insulator
• Crystal growth and magnetic structure of MnBi2Te4
• Topological Quantum Computation Based on Chiral Majorana Fermions
• Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4
• Intrinsic magnetic topological insulator phases in the Sb doped MnBi2Te4 bulks and thin flakes
• Dirac surface states in intrinsic magnetic topological insulators EuSn2As2 and MnBi2nTe3n+1
• Topological Superconductor Bi2Te3/NbSe2 heterostructures
• Majorana Fermions in Proximity-coupled Topological Insulator Nanowires
• Quantized Anomalous Hall Effect in Two-Dimensional Ferromagnets - Quantum Hall Effect from Metal -
• Spin scattering and noncollinear spin structure-induced intrinsic anomalous Hall effect in antiferromagnetic topological insulator $\mathrm{MnB}{\mathrm{i}}_2\mathrm{T}{\mathrm{e}}_4$
• Proximity effect at the superconductor - topological insulator interface
• Chiral topological superconductor and half-integer conductance plateau from quantum anomalous Hall plateau transition
• Flux-induced Majorana modes in full-shell nanowires
• Flux-induced topological superconductivity in full-shell nanowires
• Topological superconductivity in full shell proximitized nanowires
• Surface states and Rashba-type spin polarization in antiferromagnetic MnBi${}_2$Te${}_4$
• Non-Majorana Origin of the Half-Quantized Conductance Plateau in Quantum Anomalous Hall Insulator and Superconductor Hybrid Structures
• Conductance and noise signatures of Majorana backscattering
• Effects of gate-induced electric fields on semiconductor Majorana nanowires
• Hybridization at superconductor-semiconductor interfaces
• Metallization of Rashba wire by superconducting layer in the strong-proximity regime
• Coexistence of Surface Ferromagnetism and Gapless Topological State in MnBi${}_2$Te${}_4$
• Majorana corner and hinge modes in second-order topological insulator-superconductor heterostructures
• Magnetic-field-induced robust zero Hall plateau state in MnBi${}_2$Te${}_4$ Chern insulator
• A mechanism of $\frac{e^2}{2h}$ conductance plateau without 1D chiral Majorana fermions
• Proximity-induced Majorana hinge modes in antiferromagnetic topological insulators
• Disorder-induced half-integer quantized conductance plateau in quantum anomalous Hall insulator-superconductor structures
• Deterministic creation and braiding of chiral edge vortices
• Effects of the electrostatic environment on the Majorana nanowire devices
• Analytical solution for the surface states of antiferromagnetic topological insulator MnBi${}_2$Te${}_4$
• Finite-size effects in a nanowire strongly coupled to a thin superconducting shell
• Quantum confinement of the Dirac surface states in topological-insulator nanowires
• Quantum phase transition of chiral Majorana fermion in the presence of disorder
• Majorana bound states in topological insulators without a vortex
• Higher-order topological superconductors based on weak topological insulators
• Electrically tunable topological superconductivity and Majorana fermions in two dimensions
• Anomalous Floquet Chiral Topological Superconductivity in a Topological Insulator Sandwich Structure
• Chiral Majorana fermions in graphene from proximity-induced superconductivity
• Electrically tunable chiral Majorana edge modes in quantum anomalous Hall insulator-topological superconductor systems
• Lattice distortion induced first and second order topological phase transition in rectangular high-T${}_{\mathrm{c}}$ superconducting monolayer
• Metallization and proximity superconductivity in topological insulator nanowires
• Direct visualization of surface spin-flip transition in MnBi4Te7
• Massive suppression of proximity pairing in topological (Bi${}_{1-x}$Sb${}_x{)}_2$Te${}_3$ films on niobium
• Formation of a stable surface oxide in MnBi${}_2$Te${}_4$ thin films

Cited by in corpus (3)

• Meissner effect induced Majorana zero modes at small magnetic field
• Laughlin charge pumping from interplay of chiral Dirac and chiral Majorana modes
• Presence versus absence of charging energies in PbTe quantum dots