Quantum Hall Effect on Top and Bottom Surface States of Topological Insulator (Bi1-xSbx)2Te3 Films

Abstract

The three-dimensional (3D) topological insulator (TI) is a novel state of matter as characterized by two-dimensional (2D) metallic Dirac states on its surface. Bi-based chalcogenides such as Bi2Se3, Bi2Te3, Sb2Te3 and their combined/mixed compounds like Bi2Se2Te and (Bi1-xSbx)2Te3 are typical members of 3D-TIs which have been intensively studied in forms of bulk single crystals and thin films to verify the topological nature of the surface states. Here, we report the realization of the Quantum Hall effect (QHE) on the surface Dirac states in (Bi1-xSbx)2Te3 films (x = 0.84 and 0.88). With electrostatic gate-tuning of the Fermi level in the bulk band gap under magnetic fields, the quantum Hall states with filling factor ν= \pm 1 are resolved with quantized Hall resistance of Ryx = h/e2 and zero longitudinal resistance, owing to chiral edge modes at top/bottom surface Dirac states. Furthermore, the appearance of a ν= 0 state (σxy = 0) reflects a pseudo-spin Hall insulator state when the Fermi level is tuned in between the energy levels of the non-degenerate top and bottom surface Dirac points. The observation of the QHE in 3D TI films may pave a way toward TI-based electronics.

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• Quantized topological magnetoelectric effect of the zero-plateau quantum anomalous Hall state
• Planar Hall effect from the surface of topological insulators
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• Topological magneto-electric effects in thin films of topological insulators
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• Part-per-million quantization and current-induced breakdown of the quantum anomalous Hall effect
• Quantum transport of two-species Dirac fermions in dual-gated three-dimensional topological insulators
• Large discrete jumps observed in the transition between Chern states in a ferromagnetic Topological Insulator
• Quantum Hall States Stabilized in Semi-magnetic Bilayers of Topological Insulators
• Enhanced electron dephasing in three-dimensional topological insulators
• Edge states and integer quantum Hall effect in topological insulator thin films
• Domain wall of a ferromagnet on a three-dimensional topological insulator
• Bulk quantum Hall effect of spin-valley-coupled Dirac fermions in a polar antiferromagnet BaMnSb${}_2$
• Two-Dimensional Lattice Model for the Surface States of Topological Insulators
• Two-dimensional topological insulator state in cadmium arsenide thin films
• Tuning the Dirac point to the Fermi level in the ternary topological insulator (Bi${}_{1-x}$Sb${}_x$)${}_2$Te${}_3$
• Wire constructions of Abelian topological phases in three or more dimensions
• Stepwise quantized surface states and delayed Landau level hybridization in Co cluster-decorated BiSbTeSe2 topological insulator devices
• Smart patterning for topological pumping of elastic surface waves
• Large-Area and Transferred High-Quality Three-Dimensional Topological Insulator Bi2-xSbxTe3-ySey Ultrathin Film by Catalyst-Free Physical Vapor Deposition
• Unconventional Planar Hall Effect in Exchange-Coupled Topological Insulator-Ferromagnetic Insulator Heterostructures
• Spin-based Mach-Zehnder interferometry in topological insulator p-n junctions
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• Weak Localization and Antilocalization in Topological Materials with Impurity Spin-Orbit Interactions
• Topological quantum phase transition in magnetic topological insulator upon magnetization rotation
• Superconducting instabilities in a spinful Sachdev-Ye-Kitaev model
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• Platform of chiral Majorana edge modes and its quantum transport phenomena
• Gate voltage controlled thermoelectric figure of merit in three-dimensional topological insulator nanowires
• Topological insulators based on HgTe
• Towards the manipulation of topological states of matter: A perspective from electron transport
• Double quantum dot Cooper-pair splitter at finite couplings
• Laser-induced persistent photovoltage on the surface of a ternary topological insulator at room temperature
• Observation of multichannel quantum coherent transport and electron-electron interaction in Bi2Te3 single crystal
• Quantum-Hall to Insulator Transition in Ultra-low-carrier-density Topological Insulator Films and a Hidden Phase of the Zeroth Landau Level
• Interaction between counter-propagating quantum Hall edge channels in the 3D topological insulator BiSbTeSe${}_2$
• Top-down fabrication of bulk-insulating topological insulator nanowires for quantum devices
• Phase transition and anomalous scaling in the quantum Hall transport of topological insulator Sn-Bi1.1Sb0.9Te2S devices
• Ubiquitous order-disorder transition in the Mn antisite sublattice of the (MnBi${}_2$Te${}_4$)(Bi${}_2$Te${}_3$)${}_n$ magnetic topological insulators
• Zeeman field-induced two-dimensional Weyl semimetal phase in cadmium arsenide
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• Landau Levels of Topologically-Protected Surface States Probed by Dual-Gated Quantum Capacitance
• Time-reversal-symmetric topological magnetoelectric effect in three-dimensional topological insulators
• Topological surface states in thick partially relaxed HgTe film
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• Tuning and Stabilizing Topological Insulator Bi2Se3 in the Intrinsic Regime by Charge Extraction with Organic Overlayers
• Particle-Hole Asymmetry in Gapped Topological Insulator Surface States
• Global and Local Topological Quantized Responses from Geometry, Light and Time
• 2D-Dirac surface states and bulk gap probed via quantum capacitance in a 3D topological insulator
• Kerr, Faraday, and Magnetoelectric Effects in MnBi${}_2$Te${}_4$ Thin Films
• Signature of Parity Anomaly: Crossover from One Half to Integer Quantized Hall Conductance in a Finite Magnetic Field
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• Formulation of the Relativistic Quantum Hall Effect and "Parity Anomaly"
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• High-field Studies on Layered Magnetic and Polar Dirac Metals
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• Unidirectional Seebeck effect in magnetic topological insulators
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