Nonlocal edge state transport in the quantum spin Hall state

Abstract

We present direct experimental evidence for nonlocal transport in HgTe quantum wells in the quantum spin Hall regime, in the absence of any external magnetic field. The data conclusively show that the non-dissipative quantum transport occurs through edge channels, while the contacts lead to equilibration between the counter-propagating spin states at the edge. We show that the experimental data agree quantitatively with the theory of the quantum spin Hall effect.

13 pages, 4 figures

References in corpus (8)

• Quantum Spin Hall Effect in Graphene
• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Quantum Spin Hall Effect
• Quantum Transport in Semiconductor Nanostructures
• The Helical Liquid and the Edge of Quantum Spin Hall Systems
• Stability of the quantum spin Hall effect: effects of interactions, disorder, and Z_2 topology
• Manifestation of the spin-Hall effect through transport measurements in the mesoscopic regime

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• Breakdown of helical edge state topologically protected conductance in time-reversal-breaking excitonic insulators
• Proposal for an ac spin current source
• Interference-induced magnetoresistance in HgTe quantum wells
• Finite frequency backscattering current noise at a helical edge
• Resonant Faraday and Kerr effects due to in-gap states on the surface of a topological insulator
• Breakdown of topological protection due to non-magnetic edge disorder in two-dimensional materials in the Quantum Spin Hall phase
• Theory of Glide Symmetry Protected Helical Edge States in WTe${}_2$ Monolayer
• Topological energy gaps in the [111]-oriented InAs/GaSb and GaSb/InAs core-shell nanowires
• Anomaly-induced sound absorption in Weyl semimetals
• Synthetic helical liquid in a quantum wire
• Localized States and Quantum Spin Hall Effect in Si-Doped InAs/GaSb Quantum Wells
• Transport through the network of topological channels in HgTe based quantum well
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• Two-dimensional topological insulators in quantizing magnetic fields
• The invisible Majorana bound state at the helical edge
• Symmetry-Protected Topological Phase for Spin-Tensor-Momentum-Coupled Ultracold Atoms
• Straining the Identity of Majorana Fermions
• Two-Dimensional Time-Reversal-Invariant Topological Insulators via Fredholm Theory
• Composite helical edges from Abelian fractional topological insulators
• Protection of Edge transport in Quantum Spin Hall samples: Spin-Symmetry Based General Approach and Examples
• Edge States in Lateral p-n Junctions in Inverted Band HgTe Quantum Wells
• Numerical study of the giant nonlocal resistance in spin-orbital coupled graphene
• Transition between canted antiferromagnetic and spin-polarized ferromagnetic quantum Hall states in graphene on a ferrimagnetic insulator
• Elastic backscattering of quantum spin Hall edge modes from Coulomb interactions with non-magnetic impurities
• Multi-frequency Shubnikov-de Haas oscillations in topological semimetal Pt${}_2$HgSe${}_3$
• Analytical and Numerical study of the out-of-equilibrium current through a helical edge coupled to a magnetic impurity
• Giant nonlocality in nearly compensated 2D semimetals
• Detailed study of nonlinear cooling with two-terminal configurations of topological edge states
• Photoexcitation in two-dimensional topological insulators: Generating and controlling electron wavepackets in Quantum Spin Hall systems
• Experimental observation of edge-dependent quantum pseudospin Hall effect
• Tunneling Aharonov-Bohm interferometer on helical edge states
• Tunable interface states between Floquet-Weyl semimetals
• Conductance oscillations in quantum point contacts of InAs/GaSb heterostructures
• Velocity and confinement of edge plasmons in HgTe-based 2D topological insulators
• Supercurrent mediated by helical edge modes in bilayer graphene
• Orbital doublet driven even-spin Chern insulators
• Nonlocal Electrical Detection of Reciprocal Orbital Edelstein Effect
• Reconstruction-Induced ${\phi }_0$ Josephson Effect in Quantum Spin Hall Constrictions
• Spin and charge transport through helical Aharonov-Bohm interferometer with strong magnetic impurity
• Majorana bound states in topological insulators with hidden Dirac points
• Connectivity of edge and surface states in topological insulators
• Interaction effects in non-equilibrium transport properties of a four-terminal topological corner junction
• Spin Hall conductivity in the Kane-Mele-Hubbard model at finite temperature
• Multiple crossing of Landau levels of two-dimensional fermions in double HgTe quantum wells
• Edge absorption and pure spin current in 2D topological insulator in the Volkov-Pankratov model
• Photo-induced SU(3) topological material of spinless fermions
• Thermoelectric transport in two-dimensional topological insulator state based on HgTe quantum well
• Spin-pumping and inelastic electron tunneling spectroscopy in topological insulators
• Reversible Switching of the Environment-Protected Quantum Spin Hall Insulator Bismuthene at the Graphene/SiC Interface
• Cherenkov sound on a surface of a topological insulator
• Quantum capacitance of an HgTe quantum well as an indicator of the topological phase
• Local equilibrium charge and spin currents in two-dimensional topological systems
• Helical currents in metallic Rashba strips
• Transport of ultracold atoms in superpositions of S- and D-band states in a moving optical lattice
• Parity symmetry as the origin of 'spin' in the quantum spin Hall effect
• Localization of trivial edge states in InAs/GaSb composite quantum wells
• Electrical modulation of the edge channel transport in topological insulators coupled to ferromagnetic leads
• Engineering chiral edge states in 2D topological insulator/ferromagnetic insulator heterostructures
• Transport through a quantum spin Hall antidot as a spectroscopic probe of spin textures
• Magnetoresistance in the in-plane magnetic field induced semi-metallic phase of inverted HgTe quantum wells
• Current enhancement through a time dependent constriction in fractional topological insulators
• Nonlocal transport in a hybrid two-dimensional topological insulator
• Coexistence of Topological and Normal Insulating Phases in Electro-Optically Tuned InAs/GaSb Bilayer Quantum Wells
• Anomalous Spin Response and Virtual-Carrier-Mediated Magnetism in a Topological Insulator
• Nonlinear planar magnetotransport due to tilted Dirac cones in topological materials
• Optical conductivity of topological Kondo insulating states
• Edge State Wave Functions from Momentum-Conserving Tunneling Spectroscopy
• Theory for Cd${}_3$As${}_2$ thin films in the presence of magnetic fields
• Nonequilibrium transport of helical Luttinger liquids through a quantum dot
• Characterization of helical Luttinger liquids in microwave stepped-impedance edge resonators
• Emergent $Z_2$ Topological Invariant and Robust Helical Edge States in Two-Dimensional Topological Metals
• Topological contribution to magnetism in the Kane-Mele model: An explicit wave function approach
• Dynamical response of dissipative helical edge states
• Microwave Photoresistance of a Two-Dimensional Topological Insulator in a HgTe Quantum Well
• Gate-tunable imbalanced Kane-Mele model in encapsulated bilayer jacutingaite
• Localization of the Helical Edge States in the Absense of External Magnetic Field
• Quantum spin Hall effect in III-V semiconductors at elevated temperatures: advancing topological electronics
• Effective spin dephasing mechanism in confined two-dimensional topological insulators
• Spin Berry phase in a helical edge state: Sz nonconservation and transport signatures
• Spin current in an electron waveguide tunnel-coupled to topological insulator
• Band manipulation and spin texture in interacting moiré helical edges
• Identifying Majorana bound states at quantum spin Hall edges using a metallic probe
• THz ratchet effect in HgTe interdigitated structures
• Transformation of an energy spectrum and wave functions in the crossover from two- to three-dimensional topological insulator in HgTe quantum wells: long and thorny way
• Electron interferometry and quantum spin Hall phase in silicene
• Topological insulator on honeycomb lattices and ribbons without inversion symmetry
• Detection of entanglement by helical Luttinger liquids
• Multiprobe quantum spin Hall bars
• Quantum interference in HgTe structures
• Real-time edge dynamics of non-Hermitian lattices
• Dissipative Edge Transport in Disordered Axion Insulator Films
• Short-ranged interaction effects on $Z_2$ topological phase transitions
• Multi-probe analysis to separate edge currents from bulk currents in quantum spin Hall insulators and to analyze their temperature dependence
• Sub- to Super-Poissonian crossover of current noise in helical edge states coupled to a spin impurity in a magnetic field
• Chiral detection of Majorana bound states at the edge of a quantum spin Hall insulator
• Tunable helical crystals
• Interplay between intrinsic and emergent topological protection on interacting helical modes
• Non-Quantized Edge Channel Conductance and Zero Conductance Fluctuation in Non-Hermitian Chern Insulators
• Measuring the Luttinger liquid parameter with shot noise
• Electron-Hole Entanglement in a Quantum Spin Hall Insulator
• A topological current divider
• Enhanced Spin-Orbit Coupling in a Correlated Metal
• Electronic thermal conductivity in 2D topological insulator in a HgTe quantum well
• Bias-Voltage-Induced Topological Phase Transition in Finite Size Quantum Spin Hall Systems in the Presence of a Transverse Electric Field
• Finite temperature quantum noise correlations as a probe for topological helical edge modes
• Correlation and current anomalies in helical quantum dots
• Duality in topological superconductors and topological ferromagnetic insulators in a honeycomb lattice
• Tunable Contact Resistance in Transition Metal Dichalcogenide Lateral Heterojunctions
• Backscattering off a driven Rashba impurity at the helical edge
• Transport in quantum spin Hall edges in contact to a quantum dot
• Sorting and Routing Topologically Protected Edge States by their Valleys
• Spin-resolved spectroscopy of helical Andreev bound states
• Optical transitions in two-dimensional topological insulators with point defects
• Collective excitations in two-component one-dimensional massless Dirac plasma
• Quantum transport of Dirac fermions in HgTe gapless quantum wells
• Effects of electron-hole asymmetry on electronic structure of helical edge states in HgTe/HgCdTe quantum wells
• Exciton Condensation in Landau Levels of Quantum Spin Hall Insulators
• Single Crystal Growth and Transport Properties of van der Waals Materials $AB$Te${}_4$ ($A/B$ = Ti, Zr, Hf)
• Quantum spin Hall effect in bilayer honeycomb lattices with C-type antiferromagnetic order
• Reaching Van den Broeck limit in linear response and Whitney limit in nonlinear response in edge mode quantum thermoelectrics and refrigeration
• Nonequilibrium Spectroscopy of Topological Edge Liquids
• Charge and spin density in the helical Luttinger liquid
• Phase-tunable multiple Andreev reflections in a quantum spin Hall strip
• Relaxation of the entanglement spectrum in quench dynamics of topological systems
• Optical conductivity of a topological system driven using a realistic pulse
• Probing spin entanglement by gate-voltage-controlled interference of current correlation in quantum spin Hall insulators
• Time-dependent potential impurity in topological insulator
• Spin-polarized voltage probes for helical edge state: a model study
• AC Response of the Edge States in a Two-Dimensional Topological Insulator Coupled to a Conducting Puddle
• Exploring Topological Transport in Pt${}_2$HgSe${}_3$ Nanoribbons: Insights for Spintronic Device Integration
• Signatures of non-local conductivity in near-field microscopy
• Interacting Crystalline Topological Insulators in two-dimensions with Time-Reversal Symmetry
• Bulk transport through superconducting hybrid structures in HgTe quantum wells
• Effective Hamiltonian of topologically protected qubit in a helical crystal
• Ballistic-to-diffusive transition in engineered counter-propagating quantum Hall channels
• Tunable Topological Phase Transitions in a Piezoelectric Janus Monolayer
• Robust qubit interactions mediated by photonic topological edge states
• Electrically-detected single-spin resonance with Quantum Spin Hall edge states
• Short-ranged interaction effects on $Z_2$ topological phase transitions: The perturbative mean-field method
• Distributed Current Injection into a One-Dimensional Ballistic Edge Channel
• Thermal dissipation of the quantum spin Hall edge states in HgTe/CdTe quantum well
• Detection of topological states in two-dimensional Dirac systems by the dynamic spin susceptibility
• Anomalous flux periodicity in proximitised quantum spin Hall constrictions
• Resonant helical multi-edge transport in Sierpiński carpets
• Competing topological phases in few-layer graphene
• Engineering Topological Nodal Line Semimetals in Rashba Spin-Orbit Coupled Atomic Chains
• Volkov-Pankratov states on the edge of a quantum spin Hall system
• Surface-bulk coupling in a Bi${}_2$Te${}_3$ nanoplate grown by van der Waals epitaxy
• Conductance matrix of multi terminal semiconductor devices with edge channels
• Are thermal fluctuations the sole reason for finite longitudinal resistance in quantum anomalous Hall experiments?
• Spin mixing between subbands and extraordinary Landau levels shift in wide HgTe quantum wells
• Optical and spin-optical superpositions modulated by Aharonov-Bohm effect
• On the accuracy of conductance quantization in spin-Hall insulators
• Many-particle hybridization of optical transitions from zero-mode Landau levels in HgTe quantum wells
• Hall conductance and topological invariant for open systems
• Correlated disorder induced anomalous transport in magnetically doped topological insulators
• Giant magnetoresistance of edge current between fermion and spin topological systems
• Crystalline Weyl semimetal phase in Quantum Spin Hall systems under magnetic fields
• Disordered contacts can localize helical edge electrons
• Simulating topological phases and topological phase transitions with classical strings
• Counterpropagating topological and quantum Hall edge channels
• Tunable effective length of fractional Josephson junctions
• Analytical solutions of topological surface states in a series of lattice models
• Manipulation of helical states revealed by crossed Andreev reflection
• Colored ${\Delta }_T$ noise probes the topological character of edge modes
• Strongly Correlated Transport in Topological Y-Junction Devices
• Topological advantage for adsorbate chemisorption on conjugated chains
• Orthogonal Cherenkov sound in spin-orbit coupled systems
• Detection of fractional solitons in quantum spin Hall systems