Rashba Sandwiches with Topological Superconducting Phases

Abstract

We introduce a versatile heterostructure harboring various topological superconducting phases characterized by the presence of helical, chiral, or unidirectional edge states. Changing parameters, such as an effective Zeeman field or chemical potential, one can tune between these three topological phases in the same setup. Our model relies only on conventional non-topological ingredients. The bilayer setup consists of an s-wave superconductor sandwiched between two two-dimensional electron gas layers with strong Rashba spin-orbit interaction. The interplay between two different pairing mechanisms, proximity induced direct and crossed Andreev superconducting pairings, gives rise to multiple topological phases. In particular, helical edge states occur if crossed Andreev superconducting pairing is dominant. In addition, an in-plane Zeeman field leads to a 2D gapless topological phase with unidirectional edge states, which were previously predicted to exist only in non-centrosymmetric superconductors. If the Zeeman field is tilted out of the plane, the system is in a topological phase hosting chiral edge states.

References in corpus (114)

• Topological Insulators
• Topological insulators and superconductors
• Quantum Spin Hall Effect in Graphene
• 2D materials and van der Waals heterostructures
• $Z_2$ Topological Order and the Quantum Spin Hall Effect
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• Unpaired Majorana fermions in quantum wires
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Helical liquids and Majorana bound states in quantum wires
• Topological insulators and superconductors: ten-fold way and dimensional hierarchy
• Weyl Semimetal in a Topological Insulator Multilayer
• Quantum Spin Hall Effect
• Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Non-abelian statistics of half-quantum vortices in p-wave superconductors
• Non-Abelian statistics and topological quantum information processing in 1D wire networks
• Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
• Topological superconductors: a review
• Majorana fermions in a tunable semiconductor device
• Exponential Protection of Zero Modes in Majorana Islands
• Majorana bound states in a coupled quantum-dot hybrid-nanowire system
• Evidence for Helical Edge Modes in Inverted InAs/GaSb Quantum Wells
• Nonlocal edge state transport in the quantum spin Hall state
• Odd-Parity Topological Superconductors: Theory and Application to Cu${}_x$Bi${}_2$Se${}_3$
• Superconductor-Nanowire Devices from Tunneling to the Multichannel Regime: Zero-Bias Oscillations and Magnetoconductance Crossover
• Quantum Spin Hall Effect in Inverted Type II Semiconductors
• Anomalous modulation of a zero bias peak in a hybrid nanowire-superconductor device
• Majorana fermions in chains of magnetic atoms on a superconductor
• Topological Superconductivity and Superfluidity
• Topological Phases of Noncentrosymmetric Superconductors: Edge States, Majorana Fermions, and the Non-Abelian Statistics
• Chiral Topological Superconductor From the Quantum Hall State
• Topological Superconductivity and Majorana Fermions in RKKY Systems
• Quantized Majorana conductance
• Andreev-Tunneling, Coulomb Blockade, and Resonant Transport of Non-Local Spin-Entangled Electrons
• Scaling of Majorana Zero-Bias Conductance Peaks
• Observation of Quantum Spin Hall States in InAs/GaSb Bilayers under Broken Time-Reversal Symmetry
• Hard gap in epitaxial semiconductor-superconductor nanowires
• Interplay between classical magnetic moments and superconductivity in quantum one-dimensional conductors: toward a self-sustained topological Majorana phase
• Towards a realistic transport modeling in a superconducting nanowire with Majorana fermions
• End states and subgap structure in proximity-coupled chains of magnetic adatoms
• Probing Atomic Structure and Majorana Wavefunctions in Mono-Atomic Fe-chains on Superconducting Pb-Surface
• Topology of Andreev Bound States with Flat Dispersion
• Two-dimensional epitaxial superconductor-semiconductor heterostructures: A platform for topological superconducting networks
• Self-Organized Topological State with Majorana Fermions
• Electronic Entanglement in the Vicinity of a Superconductor
• Fermi Surface Topological Invariants for Time Reversal Invariant Superconductors
• Time Reversal Invariant Topological Superconductivity and Majorana Kramers Pairs
• Topological phases and surface flat bands in superconductors without inversion symmetry
• Epitaxy of Advanced Nanowire Quantum Devices
• Weyl superconductors
• Spin and Majorana polarization in topological superconducting wires
• Zero-Energy Modes from Coalescing Andreev States in a Two-Dimensional Semiconductor-Superconductor Hybrid Platform
• Probing Spatial Correlations with Nanoscale Two-Contact Tunneling
• Topological superconductivity in bilayer Rashba system
• Composite Majorana Fermion Wavefunctions in Nanowires
• Two-dimensional topological superconductivity in Pb/Co/Si(111)
• Quantized conductance doubling and hard gap in a two-dimensional semiconductor-superconductor heterostructure
• Two-dimensional p-wave superconducting states with magnetic moments on a conventional s-wave superconductor
• Topological surface states in nodal superconductors
• Adiabatic manipulations of Majorana fermions in a three-dimensional network of quantum wires
• Transition from fractional to Majorana fermions in Rashba nanowires
• Time-Reversal Invariant Parafermions in Interacting Rashba Nanowires
• Spin-Dependent Josephson Current through Double Quantum Dots and Measurement of Entangled Electron States
• A novel platform for two-dimensional chiral topological superconductivity
• Anomalous Andreev bound state in non-centrosymmetric superconductors
• Josephson radiation from gapless Andreev bound states in HgTe-based topological junctions
• Observation of a Helical Luttinger-Liquid in InAs/GaSb Quantum Spin Hall Edges
• Majorana End-States in Multi-band Microstructures with Rashba Spin-Orbit Coupling
• Transparent Semiconductor-Superconductor Interface and Induced Gap in an Epitaxial Heterostructure Josephson Junction
• Edge Channel Transport in InAs/GaSb Topological Insulating Phase
• Unexpected edge conduction in HgTe quantum wells under broken time reversal symmetry
• Edge Transport in the Trivial Phase of InAs/GaSb
• RKKY interaction of magnetic impurities in Dirac and Weyl semimetals
• Majorana Fermions in Nodal Superconductors: Gapless Topological Phase
• Majorana modes in time-reversal invariant s-wave topological superconductors
• Doping Mechanisms in Graphene-MoS2 Hybrids
• Reversing non-local transport through a superconductor by electromagnetic excitations
• Electric-Field Induced Majorana Fermions in Armchair Carbon Nanotubes
• Electric and Magnetic Tuning Between the Trivial and Topological Phases in InAs/GaSb Double Quantum Wells
• Majorana Flat Bands and Uni-directional Majorana Edge States in Gapless Topological Superconductors
• Mutation of Andreev into Majorana bound states in long NS and SNS junctions
• Stretchable persistent spin helices in GaAs quantum wells
• Fermionic and Majorana Bound States in Hybrid Nanowires with Non-Uniform Spin-Orbit Interaction
• Ruderman-Kittel-Kasuya-Yosida interaction in Weyl semimetals
• Persistence of two-dimensional topological insulator state in wide HgTe quantum well
• Fractional Topological Insulators -- a Pedagogical Review
• Non-local transport via edge-states in InAs/GaSb coupled quantum wells
• Spin and Charge Signatures of Topological Superconductivity in Rashba Nanowires
• Helical Dirac-Majorana interferometer in a superconductor-topological insulator sandwich structure
• Majorana Kramers pairs in Rashba double nanowires with interactions and disorder
• Edge transport in InAs and InAs/GaSb quantum wells
• Gate-controlled semimetal-topological insulator transition in an InAs/GaSb heterostructure
• Decoupling edge versus bulk conductance in the trivial regime of an InAs/GaSb double quantum well using Corbino ring geometry
• Majorana flat bands, chiral Majorana edge states, and unidirectional Majorana edge states in noncentrosymmetric superconductors
• Single-edge transport in an InAs/GaSb quantum spin Hall insulator
• Low-field Topological Threshold in Majorana Double Nanowires
• Paramagnetically induced gapful topological superconductors
• Majorana Flat Bands in s-Wave Gapless Topological Superconductors
• Electrically tunable topological superconductivity and Majorana fermions in two dimensions
• Anomalous Hall effect in a two dimensional electron gas with magnetic impurities
• Destructive interference of direct and crossed Andreev pairing in a system of two nanowires coupled via an s-wave superconductor
• DIII Topological Superconductivity with Emergent Time-Reversal Symmetry
• Suppression of bulk conductivity in InAs/GaSb broken gap composite quantum wells
• Engineering quantum spin Hall insulators by strained-layer heterostructures
• Highly tunable time-reversal-invariant topological superconductivity in topological insulator thin films
• Transition from insulating to metallic phase induced by in-plane magnetic field in HgTe quantum wells
• Topological D+p-wave superconductivity in Rashba systems
• Anomalous Hall effect in superconductors with spin-orbit interaction
• Three-Dimensional Fractional Topological Insulators in Coupled Rashba Layers
• Searching for two-dimensional Weyl superconductors in heterostructures
• Type-I and type-II topological nodal superconductors with $s$-wave interaction
• Anomalous quantum Hall effect induced by disorder in topological insulators

Cited by in corpus (12)

• Second Order Topological Superconductivity in $\pi$-Junction Rashba Layers
• Majorana bound states in semiconducting nanostructures
• Kramers pairs of Majorana corner states in a topological insulator bilayer
• Majorana Bound States in Double Nanowires with Reduced Zeeman Thresholds due to Supercurrents
• How to measure the Majorana polarization of a topological planar Josephson junction
• Hinge Modes and Surface States in Second-Order Topological Three-Dimensional Quantum Hall Systems induced by Charge Density Modulation
• Planar Josephson Hall effect in topological Josephson junctions
• RKKY interaction at helical edges of topological superconductors
• Topological Transitions in a Model for Proximity Induced Superconductivity
• Crystalline Weyl semimetal phase in Quantum Spin Hall systems under magnetic fields
• Gap Anisotropy in Layered Superconductors Due to Rashba and Dresselhaus Spin-Orbit Interactions
• Realizing Majorana Kramers pairs in two-channel InAs-Al nanowires with highly misaligned electric fields