Hinge states in a system of coupled Rashba layers

Abstract

We consider a system of stacked tunnel-coupled two-dimensional electron- and hole-gas layers with Rashba spin-orbit interactions subjected to a staggered Zeeman field. The interplay of different intra-layer tunnel couplings results in a phase transition to a topological insulator phase in three dimensions hosting gapless surface states. The staggered Zeeman field further enriches the topological phase diagram by generating a second-order topological insulator phase hosting gapless hinge states. The emergence of the topological phases is proven analytically in the regime of small Zeeman field and confirmed by numerical simulations in the non-perturbative region of the phase diagram. The topological phases are stable against external perturbations and disorder.

arXiv comment10 pages, 5 figures; Supplemental Appendix: 2 pages, 1 figure

References in corpus (49)

• Topological Insulators
• Topological insulators and superconductors
• Fault-tolerant quantum computation by anyons
• Topological Insulators with Inversion Symmetry
• Weyl Semimetal in a Topological Insulator Multilayer
• Quantized Electric Multipole Insulators
• Higher-Order Topological Insulators
• Topological superconductors: a review
• Electric Multipole Moments, Topological Multipole Moment Pumping, and Chiral Hinge States in Crystalline Insulators
• First direct observation of Spin-textures in Topological Insulators : Spin-resolved ARPES as a probe of topological quantum spin Hall effect and Berry's phase
• $(d-2)$-dimensional edge states of rotation symmetry protected topological states
• Topolectrical circuit realization of topological corner modes
• Reflection symmetric second-order topological insulators and superconductors
• Observation of a phononic quadrupole topological insulator
• Acoustic higher-order topological insulator on a Kagome lattice
• Zoo of quantum-topological phases of matter
• Higher-Order Topology in Bismuth
• Demonstration of a quantized microwave quadrupole insulator with topologically protected corner states
• Magnetic impurities on the surface of a topological insulator
• Direct observation of corner states in second-order topological photonic crystal slabs
• Photonic quadrupole topological phases
• Higher-order topological insulators and superconductors protected by inversion symmetry
• Corner states of light in photonic waveguides
• Second-order topological insulators and superconductors with an order-two crystalline symmetry
• Bi-collinear antiferromagnetic order in the tetragonal $\alpha$-FeTe
• Majorana corner modes in a high-temperature platform
• Impurity Bound States and Greens Function Zeroes as Local Signatures of Topology
• Higher Order Topological Phases: A General Principle of Construction
• Composite Majorana Fermion Wavefunctions in Nanowires
• Majorana Kramers pairs in higher-order topological insulators
• Higher-order topological insulators protected by inversion and rotoinversion symmetries
• Majorana corner states in a two-dimensional magnetic topological insulator on a high-temperature superconductor
• Second Order Topological Superconductivity in $\pi$-Junction Rashba Layers
• Dimensional hierarchy of higher-order topology in three-dimensional sonic crystals
• Helical Hinge Majoranas in Iron-Based Superconductors
• Boundary Green functions of topological insulators and superconductors
• Higher-order topological odd-parity superconductors
• Synthetic spin orbit interaction for Majorana devices
• Fragile Topology Protected by Inversion Symmetry: Diagnosis, Bulk-Boundary Correspondence, and Wilson Loop
• Nuclear-spin-induced localization of the edge states in two-dimensional topological insulators
• Evidence for interfacial superconductivity in a bi-collinear antiferromagnetically ordered FeTe monolayer on a topological insulator
• Phase tunable second-order topological superconductor
• Fractional Topological Superconductivity and Parafermion Corner States
• Floquet Second-Order Topological Superconductor Driven via Ferromagnetic Resonance
• Simple model for second-order topological insulators and loop-nodal semimetals in Transition Metal Dichalcogenides XTe${}_2$ (X=Mo,W)
• Inversion-symmetry protected chiral hinge states in stacks of doped quantum Hall layers
• Detection of second-order topological superconductors by Josephson junctions
• Three-Dimensional Fractional Topological Insulators in Coupled Rashba Layers
• From Coupled Rashba Electron and Hole Gas Layers to 3D Topological Insulators

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• Theory of inversion-${\mathbb{Z}}_4$ protected topological chiral hinge states and its applications to layered antiferromagnets
• The Bulk-Hinge Correspondence and Three-Dimensional Quantum Anomalous Hall Effect in Second Order Topological Insulators
• Higher-order topological superconductors from Weyl semimetals
• Hinge Spin Polarization in Magnetic Topological Insulators Revealed by Resistance Switch
• Topological Corner States in Graphene by Bulk and Edge Engineering
• Fractional second-order topological insulator from a three-dimensional coupled-wires construction
• Second-order topology and supersymmetry in two-dimensional topological insulators
• Realization of a three-dimensional quantum Hall effect in a Zeeman-induced second order topological insulator on a torus
• Staggered spin-orbit interaction in a nanoscale device