Robust Surface Hall Effect and Nonlocal Transport in SmB6: Indication for an Ideal Topological Insulator

Abstract

A topological insulator (TI) is an unusual quantum state in which the insulating bulk is topologically distinct from vacuum, resulting in a unique metallic surface that is robust against time-reversal invariant perturbations. These surface transport properties, however, remains difficult to be isolated from the bulk in existing TI crystals (Bi2Se3, Bi2Te3 and Sb2Te3) due to impurity caused bulk conduction. We report in large crystals of topological Kondo insulator (TKI) candidate material SmB6 the thickness-independent surface Hall effects and non- local transport, which are robust against perturbations including mechanical abrasion. These results serve as proof that at low temperatures SmB6 has a robust metallic surface that surrounds a truly insulating bulk, paving the way for transport studies of the surface state in this proposed TKI material. ([email protected]).

References in corpus (23)

• Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
• Quantum Spin Hall Insulator State in HgTe Quantum Wells
• Topological Insulators with Inversion Symmetry
• A topological Dirac insulator in a quantum spin Hall phase : Experimental observation of first strong topological insulator
• Topological Surface States Protected From Backscattering by Chiral Spin Texture
• Three dimensional topological invariants for time reversal invariant Hamiltonians and the three dimensional quantum spin Hall effect
• Nonlocal edge state transport in the quantum spin Hall state
• Two-dimensional Dirac fermions in a topological insulator: transport in the quantum limit
• Topological origin of subgap conductance in insulating bilayer graphene
• Bulk Band Gap and Surface State Conduction Observed in Voltage-Tuned Crystals of the Topological Insulator Bi${}_2$Se${}_3$
• Surface electronic structure of the topological Kondo insulator candidate correlated electron system SmB6
• Low-temperature surface conduction in the Kondo insulator SmB${}_6$
• Correlated Topological Insulators with Mixed Valence
• Topological surface state in the Kondo Insulator Samarium Hexaboride
• Observation of in-gap surface states in the Kondo insulator SmB6 by photoemission
• Surface and Bulk Electronic Structure of the Strongly Correlated System SmB${}_6$ and Implications for a Topological Kondo Insulator
• Cubic Topological Kondo Insulators
• High-Field Shubnikov-de Haas Oscillations in the Topological Insulator Bi${}_2$Te${}_2$Se
• Hybridization, Inter-Ion Correlation, and Surface States in the Kondo Insulator SmB6
• Low carrier concentration crystals of the topological insulator Bi${}_2$Te${}_2$Se
• Weak Antilocalization and Linear Magnetoresistance in The Surface State of SmB6
• Imaging the Kondo Insulating Gap on SmB6
• Surface electronic structure of a topological Kondo insulator candidate SmB6: insights from high-resolution ARPES

Cited by in corpus (185)

• Colloquium: Topological Band Theory
• Interacting topological insulators: a review
• Low-temperature surface conduction in the Kondo insulator SmB${}_6$
• Consequences of breaking time reversal symmetry in LaSb: a resistivity plateau and extreme magnetoresistance
• Topological surface state in the Kondo Insulator Samarium Hexaboride
• Quantum oscillations in Kondo Insulator SmB${}_6$
• Topological Kondo Insulators
• Direct observation of the spin texture in strongly correlated SmB6 as evidence of the topological Kondo insulator
• Cubic Topological Kondo Insulators
• Topological Crystalline Kondo Insulator in Mixed Valence Ytterbium Borides
• Symmetry Enforced Non-Abelian Topological Order at the Surface of a Topological Insulator
• Tomography of band insulators from quench dynamics
• Tuning bulk and surface conduction in topological Kondo insulator SmB6
• Hybridization gap and Fano resonance in SmB${}_6$
• Resistivity plateau and extremely large magnetoresistance in NbAs2 and TaAs2
• Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB${}_6$
• Kondo Breakdown in Topological Kondo Insulators
• Kondo Breakdown and Quantum Oscillations in SmB${}_6$
• Field-induced resistivity plateau and unsaturated negative magnetoresistance in topological semimetal TaSb2
• Emergence of a coherent in-gap state in SmB6 Kondo insulator revealed by scanning tunneling spectroscopy
• Interaction Driven Subgap Spin Exciton in the Kondo Insulator SmB6
• Excitons in topological Kondo insulators - theory of thermodynamic and transport anomalies in SmB${}_6$
• One-dimensional edge state transport in a topological Kondo insulator
• Correlation between bulk thermodynamic measurements and the low temperature resistance plateau in SmB6
• Mixed-valence insulators with neutral Fermi surfaces
• Skyrme insulators: insulators at the brink of superconductivity
• Möbius Kondo Insulators
• Magnetotransport properties and evidence of topological insulating state in LaSbTe
• Evidence for Weyl fermions in a canonical heavy-fermion semimetal YbPtBi
• Possible Weyl fermions in the magnetic Kondo system CeSb
• Evidence of surface transport and weak anti-localization in single crystal of Bi2Te2Se topological insulator
• Correlation effects in (111) bilayers of perovskite transition-metal oxides
• Superconductivity in half-Heusler compound TbPdBi
• Additional energy scale in SmB${}_6$ at low temperature
• The importance of Charge Fluctuations for the Topological Phase in SmB${}_6$
• Imaging emergent heavy Dirac fermions of a topological Kondo insulator
• Topological invariants, surface states, and interaction-driven phase transitions in correlated Kondo insulators with cubic symmetry
• Weak Antilocalization and Linear Magnetoresistance in The Surface State of SmB6
• Chiral Kondo Lattice in Doped MoTe${}_2$/WSe${}_2$ Bilayers
• Surface Theory of a Family of Topological Kondo Insulators
• Anomalous 3D bulk AC conduction within the Kondo gap of SmB${}_6$ single crystals
• Exotic Kondo crossover in a wide temperature region in the topological Kondo insulator SmB6 revealed by high-resolution ARPES
• Non-Kondo-like Electronic Structure in the Correlated Rare-Earth Hexaboride YbB${}_6$
• Extreme magnetoresistance in the topologically trivial lanthanum monopnictide LaAs
• Quantum oscillations in flux-grown SmB6 with embedded aluminum
• Robustness of the Insulating Bulk in the Topological Kondo Insulator SmB${}_6$
• Heavy surface state in a possible topological Kondo insulator: Magneto-thermoelectric transport on the (011)-plane of SmB${}_6$
• SmB6 Photoemission: Past and Present
• Composition-spread Growth and the Robust Topological Surface State of Kondo insulator SmB6 Thin Films
• 4$f$ crystal field ground state of the strongly correlated topological insulator SmB${}_6$
• Hysteretic Magnetotransport in SmB6 at Low Magnetic Fields
• Magnetotransport Measurements of the Surface States of Samarium Hexaboride using Corbino Structures
• Coexistence of light and heavy surface states in a topological multi-band Kondo insulator
• Spin Injection and Inverse Edelstein Effect in the Surface States of Topological Kondo Insulator SmB6
• Surface-state spin textures and mirror Chern numbers in topological Kondo insulators
• Heavy Weyl fermion state in CeRu${}_4$Sn${}_6$
• Magnetic and defect probes of the SmB${}_6$ surface state
• Breakdown of the Kondo insulating state in SmB6 by introducing Sm vacancies
• Band symmetries of mixed-valence topological insulator: SmB6
• Pressure-resistant intermediate valence in Kondo insulator SmB6
• Bulk Fermi surface of charge-neutral excitations in SmB6 or not: a heat-transport study
• Kondo insulator SmB6 under strain: surface dominated conduction near room temperature
• Electronic structure of YbB${}_6$: Is it a Topological Insulator or not?
• Surface state reconstruction in ion-damaged SmB_6
• Bulk and surface electronic properties of SmB6: a hard x-ray photoelectron spectroscopy study
• End states in a 1-D topological Kondo insulator
• Pressure-induced quantum phase transitions in topological insulator YbB6
• Topological properties and the dynamical crossover from mixed-valence to Kondo-lattice behavior in golden phase of SmS
• Low-temperature magnetic fluctuations in the Kondo insulator SmB6
• Dynamically generated edge states in topological Kondo insulators
• Magnetoresistance and robust resistivity plateau in MoAs2
• Modification and Control of Topological Insulator Surface States Using Surface Disorder
• Plutonium-Based Heavy-Fermion Systems
• Consecutive topological phase transitions and colossal magnetoresistance in a magnetic topological semimetal
• Magnetotransport properties of the type II Weyl semimetal candidate Ta3S2
• Consistency between ARPES and STM measurements on SmB${}_6$
• Properties of the donor impurity band in mixed valence insulators
• Field-dependent heat transport in the Kondo insulator SmB6 : phonons scattered by magnetic impurities
• Surface and electronic structure of SmB${}_6$ through Scanning Tunneling Microscopy
• Extremely large magnetoresistance and the complete determination of the Fermi surface topology in the semimetal ScSb
• Magnetic field-tuned quantum criticality in a Kondo insulator
• In-gap collective mode spectrum of the Topological Kondo Insulator SmB6
• Incomplete Protection of the Surface Weyl Cones of the Kondo Insulator SmB${}_6$: Spin Exciton Scattering
• Two-dimensional heavy fermions on the strongly correlated boundaries of Kondo topological insulators
• Two distinct topological phases in the mixed valence compound YbB6 and its differences from SmB6
• Observation of the superconducting proximity effect in the surface state of SmB6 thin films
• A highly asymmetric nodal semimetal in bulk SmB6
• Anomalous quantum oscillations and evidence for a non-trivial Berry phase in SmSb
• Visualizing the atomic-scale origin of metallic behavior in Kondo insulators
• Excitonic and Nematic Instabilities on the Surface of Topological Kondo Insulators
• Model Hamiltonian for topological Kondo insulator SmB6
• Fractionalized Fermi liquid on the surface of a topological Kondo insulator
• Metallic surface states in a correlated d-electron topological Kondo insulator candidate FeSb2
• Comparative study of rare earth hexaborides using high resolution angle-resolved photoemission
• A Strongly-Interacting Dirac Liquid on the Surface of a Topological Kondo Insulator
• Suppression of magnetic excitations near the surface of the topological Kondo insulator SmB6
• Resistivity saturation in Kondo insulators
• Nonlocal Edge State Transport in Topological Insulators
• The Effects of Spin-Excitons on the Surface States of SmB6: A Photoemission Study
• Crossover of Magnetoresistance from Fourfold to Twofold Symmetry in SmB6 Single Crystal, a topological Kondo insulator
• Surface-induced positive planar Hall effect in topological Kondo insulator SmB6 microribbons
• Probing FeSi, a d-electron topological Kondo insulator candidate, with magnetic field, pressure, and microwaves
• Magnetic end-states in a strongly-interacting one-dimensional topological Kondo insulator
• Diamagnetic Sm${}^{3+}$ in the topological Kondo insulator SmB${}_6$
• Intrinsic Low-Temperature Magnetism in SmB6
• BaSn${}_2$: A new, wide-gap, strong topological insulator
• Radio Frequency Tunable Oscillator Device Based on SmB6 Microcrystal
• Spin- and angle-resolved photoemission on the topological Kondo Insulator candidate: SmB6
• Evidence of non-trivial Berry phase and Kondo physics in SmBi
• Robust Surface States indicated by Magnetotransport in SmB6 Thin Films
• ARPES insights on the metallic states of YbB6(001): E(k) dispersion, temporal changes and spatial variation
• Anomalous Nonlocal Resistance and Spin-charge Conversion Mechanisms in Two-Dimensional Metals
• Anomalous Hall Effect on the surface of topological Kondo insulators
• Electrical detection of surface spin polarization of candidate topological Kondo insulator SmB6
• Metallic Surface States Probed Within the Microwave Skin Depth of the Putative Topological Insulator YBiPt Compound
• Characterization of a correlated topological Kondo insulator in one dimension
• Size Constraints on Majorana Beamsplitter Interferometer: Majorana Coupling and Surface-Bulk Scattering
• Topological Kondo semimetal and insulator in AB-stacked heterobilayer transition metal dichalcogenides
• Topology of SmB${}_6$ determined by dynamical mean field theory
• Surface properties of SmB6 from x-ray photoelectron spectroscopy
• Multiple topological Dirac cones in a mixed-valent Kondo semimetal: g-SmS
• Quantum spin fluctuations in the bulk insulating state of pure and Fe-doped SmB6
• Reduction of the low-temperature bulk gap in samarium hexaboride under high magnetic fields
• A RIXS investigation of the crystal-field splitting of Sm${}^{3+}$ in SmB${}_6$
• ${}^{239}$Pu nuclear magnetic resonance in the candidate topological insulator PuB${}_4$
• Understanding low-temperature bulk transport in samarium hexaboride without relying on in-gap bulk states
• Signature of surface state coupling in thin films of the topological Kondo insulator SmB${}_6$ from anisotropic magnetoresistance
• Vortices and vortex states in Rashba spin-orbit-coupled condensates
• Magnetoresistance and Kondo effect in the nodal-line semimetal VAs${}_2$
• Interacting weak topological insulators and their transition to Dirac semimetal phases
• Many-body instabilities and mass generation in slow Dirac materials
• Fragility of the Kondo insulating gap against disorder: relevance to recent puzzles in topological Kondo insulators
• Spin-selective tunneling from nanowires of the candidate topological Kondo insulator SmB6
• Impurities or a neutral Fermi surface? A further examination of the low-energy ac optical conductivity of SmB${}_6$
• Bulk transport paths through defects in floating zone and Al flux grown SmB${}_6$
• Coulomb drag in topological insulator films
• Robust surface states and coherence phenomena in magnetically alloyed SmB6
• Optical conductivity of topological Kondo insulating states
• Coulomb drag in topological materials
• Interaction quench and thermalization in a one-dimensional topological Kondo insulator
• From bad metal to Kondo insulator: temperature evolution of the optical properties of SmB${}_6$
• Many-body breakdown of indirect gap in topological Kondo insulators
• Probing the interplay between surface and bulk states in the topological Kondo insulator SmB${}_6$ through conductance fluctuation spectroscopy
• Surface vs bulk electronic structures of a moderately correlated topological insulator YbB6 revealed by ARPES
• Anomalies in a slightly doped insulator with strong particle-hole asymmetry and narrow gap---the case for SmB${}_6$?
• Many-Body Effects in Topological Kondo Insulators
• Electrical detection of the inverse Edelstein effect on the surface of SmB${}_6$
• Influence of Helical Spin Structure on the Magnetoresistance of an Ideal Topological Insulator
• An STM perspective on hexaborides: Surface states of the Kondo insulator SmB${}_6$
• Pressure-Driven Topological Phase Transition in the Yb Chalcogenides YbO and YbS
• Exactly solvable model of topological insulator realized on spin-1/2 lattice
• Exactly solvable 2D topological Kondo lattice model
• Realizing a topological diode effect on the surface of a topological Kondo insulator
• Unconventional Josephson junctions with topological Kondo insulator weak links
• Quantum phase transition and destruction of Kondo effect in pressurized SmB6
• Inexorable Edge Kondo Breakdown in Topological Kondo Insulators
• Hall coefficient diagnostics of surface state in pressurized SmB6
• Direct observation of surface state thermal oscillation in SmB6 oscillators
• Slow crystalline electric field fluctuations in the Kondo lattice SmB${}_6$
• Phase stability in SmB${}_6$
• Spontaneous symmetry breaking and quantum Hall valley ordering on the surface of topological hexaborides
• Disordered 2D ferromagnetism at the surface of FeSi
• Surface excitations relaxation in the Kondo insulator Sm${}_{1-x}$Gd${}_x$B${}_6$
• Mixed-valence state in the dilute-impurity regime of La-substituted SmB${}_6$
• Magnetic effects on Chern Kondo insulator
• A Mean-Field Study of Quantum Oscillations in Two-Dimensional Kondo Insulators
• Pressure studies of the quantum critical alloy Ce(0.93)Yb(0.07)CoIn5
• Observation of the superconducting proximity effect from surface states in SmB${}_6$/YB${}_6$ thin film heterostructures via terahertz spectroscopy
• Thermoelectric signals of state transition in polycrystalline SmB6
• Surface Conductivity in Antiferromagnetic Semiconductor CrSb${}_2$
• Persistence of correlation-driven surface states in SmB6 under pressure
• Importance of orbital fluctuations for the magnetic dynamics in heavy-fermion compound SmB${}_6$
• Direct measurement of a remnant Fermi surface in SmB6
• f-electron charge densities probed using core level non-resonant inelastic x-ray scattering
• Emergent photovoltage on SmB6 surface upon bulk-gap evolution revealed by pump-and-probe photoemission spectroscopy
• Nanoscale Conducting and Insulating Domains on YbB${}_6$
• Cross-Polarized Microwave Surface-State Anti-Resonance
• Possible origin of extremely large magnetoresistance in the topological insulator CaBi2 single crystal
• SmB6: A material with anomalous energy distribution function of charge carriers?
• Mini Volume Collapse as Evidence for a 3-Body Magnetic Polaron in $S{m}_{1-x}E{u}_{x}S$
• Intrinsic one-dimensional conducting channels in the Kondo insulator SmB6
• Evolution of topological end states in the one-dimensional Kondo-Heisenberg model with site modulation
• Anisotropic Surface State Band Splitting and Low Energy Flat Bands in 3d Correlated Topological Kondo Insulator Candidate FeSb${}_2$
• Electronic correlations and topology in Kondo insulator PuB${}_6$
• Colossal magnetoresistance in topological Kondo insulator