Pseudo-ballistic transport in 3D topological insulator quantum wires

Abstract

Quantum conductance fluctuations are investigated in disordered 3D topological insulator quantum wires. Both experiments and theory reveal a new transport regime in a mesoscopic conductor, pseudo-ballistic transport, for which ballistic properties persist beyond the transport mean free path, characteristic of diffusive transport. It results in non-universal conductance fluctuations due to quasi-1D surface modes, as observed in long and narrow Bi${}_2$Se${}_3$ nanoribbons. Spin helical Dirac fermions in quantum wires retain pseudo-ballistic properties over an unusually broad energy range, due to strong quantum confinement and weak momentum scattering.

arXiv commentMain text,4 figures; Supplementary Information, 3 figures

References in corpus (47)

• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• New directions in the pursuit of Majorana fermions in solid state systems
• Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
• First observation of Spin-Momentum Helical Locking in Bi2Se3 and Bi2Te3, demonstration of Topological-Order at 300K and a realization of topological-transport-regime
• Quantum-limited shot noise in graphene
• Introduction to topological superconductivity and Majorana fermions
• Aharonov-Bohm interference in topological insulator nanoribbons
• Superconductor-Nanowire Devices from Tunneling to the Multichannel Regime: Zero-Bias Oscillations and Magnetoconductance Crossover
• Phase Coherent Transport of Charges in Graphene Quantum Billiard
• Zero-bias peaks in spin-orbit coupled superconducting wires with and without Majorana end-states
• Zero-bias anomaly in a nanowire quantum dot coupled to superconductors
• Demonstration of one-parameter scaling at the Dirac point in graphene
• Zero-voltage conductance peak from weak antilocalization in a Majorana nanowire
• Class D spectral peak in Majorana quantum wires
• Majorana Fermions in Proximity-coupled Topological Insulator Nanowires
• Shot Noise in Ballistic Graphene
• Aharonov-Bohm oscillations in disordered topological insulator nanowires
• Two-dimensional surface charge transport in topological insulators
• Quantum interference and Aharonov-Bohm oscillations in topological insulators
• Tunneling Spectroscopy of Quasiparticle Bound States in a Spinful Josephson Junction
• Soft Superconducting Gap in Semiconductor Majorana Nanowires
• Interaction-induced criticality in Z_2 topological insulators
• Shot Noise in Graphene
• One-dimensional helical transport in topological insulator nanowire interferometers
• Enhanced zero-bias Majorana peak in disordered multi-subband quantum wires
• Aharonov-Bohm Oscillations in a Quasi-Ballistic 3D Topological Insulator Nanowire
• The surface states of topological insulators - Dirac fermion in curved two dimensional spaces
• Magnetic field induced helical mode and topological transitions in a quasi-ballistic topological insulator nanoribbon with circumferentially quantized surface state sub-bands
• Wormhole Effect in a Strong Topological Insulator
• Stability of Majorana Fermions in Proximity-Coupled Topological Insulator Nanowires
• Density of states of disordered topological superconductor-semiconductor hybrid nanowires
• Gate-tuned Differentiation of Surface-conducting States in Bi1.5Sb0.5Te1.7Se1.3 Topological-insulator Thin Crystals
• Weak Antilocalization and Conductance Fluctuation in a Sub-micrometer-sized Wire of Epitaxial Bi2Se3
• Quasi-ballistic transport of Dirac fermions in a Bi2Se3 nanowire
• Conductance and conductance fluctuations of narrow disordered quantum wires
• Mesoscopic conductance fluctuations in graphene samples
• Quantum kinetic equation and universal conductance fluctuations in graphene
• Universal conductance fluctuations in Dirac materials in the presence of long-range disorder
• Robust Transport Signatures of Topological Superconductivity in Topological Insulator Nanowires
• Band bending inversion in Bi${}_2$Se${}_3$ nanostructures
• Quantum Coherence at Low Temperatures in Mesoscopic Systems: Effect of Disorder
• Spin-based Mach-Zehnder interferometry in topological insulator p-n junctions
• Detecting Perfect Transmission in Josephson Junctions on the Surface of Three Dimensional Topological Insulators
• Quantum corrections to the conductivity and Hall coefficient of a 2D electron gas in a dirty AlGaAs/GaAs/AlGaAs quantum well: transition from diffusive to ballistic regime
• Quantum corrections to the conductivity and Hall coefficient of a two-dimensional electron gas in a dirty AlGaAs/GaAs/AlGaAs quantum well: from the diffusive to the ballistic regime
• Enhanced transport length of spin-helical Dirac fermions in disordered 3D topological insulators
• Anomalously enhanced photoemission from the Dirac point and symmetry of the self-energy variations for the surface states in Bi2Se3

Cited by in corpus (18)

• Quantum confinement of the Dirac surface states in topological-insulator nanowires
• Band bending inversion in Bi${}_2$Se${}_3$ nanostructures
• Proximity-induced superconductivity in (Bi${}_{1-x}$Sb${}_x$)${}_2$Te${}_3$ topological-insulator nanowires
• Reversal of thermoelectric current in tubular nanowires
• Conditions for fully gapped topological superconductivity in topological insulator nanowires
• Gate-induced decoupling of surface and bulk state properties in selectively-deposited Bi${}_2$Te${}_3$ nanoribbons
• Suppression of scattering in quantum confined 2D-helical Dirac systems
• Robust and fragile Majorana bound states in proximitized topological insulator nanoribbons
• Perfect transmission and Aharanov-Bohm oscillations in topological insulator nanowires with nonuniform cross section
• Finite-size effects in cylindrical topological insulators
• Transport in topological insulator nanowires
• Thermoelectric current in topological insulator nanowires with impurities
• Signature of pseudo-diffusive transport in mesoscopic topological insulators
• Aharanov-Bohm oscillations and perfectly transmitted mode in amorphous topological insulator nanowires
• Anisotropic transport properties in prismatic topological insulator nanowires
• Phase-coherent loops in selectively-grown topological insulator nanoribbons
• Equatorial magnetoplasma waves
• In-plane magnetic field-driven symmetry breaking in topological insulator-based three-terminal junctions