Kondo Breakdown in Topological Kondo Insulators

Abstract

Motivated by the observation of light surface states in SmB6, we examine the effects of surface Kondo breakdown in topological Kondo insulators. We present both numerical and analytic results which show that the decoupling of the localized moments at the surface disturbs the compensation between light and heavy electrons and dopes the Dirac cone. Dispersion of these uncompensated surface states are dominated by inter-site hopping, which leads to a much lighter quasiparticles. These surface states are also highly durable against the effects of surface magnetism and decreasing thickness of the sample.

arXiv commentMinor changes, published version

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Cited by in corpus (75)

• Topological Kondo Insulators
• Quantum oscillation in narrow-gap topological insulators
• Kondo Breakdown and Quantum Oscillations in SmB${}_6$
• Excitons in topological Kondo insulators - theory of thermodynamic and transport anomalies in SmB${}_6$
• Mixed-valence insulators with neutral Fermi surfaces
• Skyrme insulators: insulators at the brink of superconductivity
• Möbius Kondo Insulators
• Additional energy scale in SmB${}_6$ at low temperature
• Breakdown of topological Thouless pumping in the strongly interacting regime
• Observation of perfect Andreev reflection due to Klein paradox in a topological superconducting state
• Quantum oscillations in flux-grown SmB6 with embedded aluminum
• Topological surface states interacting with bulk excitations in the Kondo insulator SmB${}_6$ revealed via planar tunneling spectroscopy
• Coexistence of light and heavy surface states in a topological multi-band Kondo insulator
• Surface-state spin textures and mirror Chern numbers in topological Kondo insulators
• Bulk Fermi surface of charge-neutral excitations in SmB6 or not: a heat-transport study
• Distinct topological crystalline phases in models for the strongly correlated topological insulator SmB6
• Non-trivial surface states of samarium hexaboride at the (111) surface
• Consistency between ARPES and STM measurements on SmB${}_6$
• Observation of a well-defined hybridization gap and in-gap states on the SmB6 (001) surface
• Incomplete Protection of the Surface Weyl Cones of the Kondo Insulator SmB${}_6$: Spin Exciton Scattering
• Observation of the superconducting proximity effect in the surface state of SmB6 thin films
• Parity-violating hybridization in heavy Weyl semimetals
• Excitonic and Nematic Instabilities on the Surface of Topological Kondo Insulators
• Topological phase in $1D$ topological Kondo insulator: $Z_2$ topological insulator, Haldane-like phase and Kondo breakdown
• Fractionalized Fermi liquid on the surface of a topological Kondo insulator
• Comparative study of rare earth hexaborides using high resolution angle-resolved photoemission
• Quantum Oscillations in the Magnetisation and Density of States of Insulators
• Hall anomaly, Quantum Oscillations and Possible Lifshitz Transitions in Kondo Insulator YbB${}_{12}$: Evidence for Unconventional Charge Transport
• Surface-induced positive planar Hall effect in topological Kondo insulator SmB6 microribbons
• The Effects of Spin-Excitons on the Surface States of SmB6: A Photoemission Study
• Spin textures on general surfaces of the correlated topological insulator SmB6
• Bulk Rotational Symmetry Breaking in Kondo Insulator SmB6
• Spin- and angle-resolved photoemission on the topological Kondo Insulator candidate: SmB6
• Robust Surface States indicated by Magnetotransport in SmB6 Thin Films
• Diamagnetic Sm${}^{3+}$ in the topological Kondo insulator SmB${}_6$
• Radio Frequency Tunable Oscillator Device Based on SmB6 Microcrystal
• The anomalous antiferromagnetic topological phase in pressurized SmB6
• Topological Kondo semimetal and insulator in AB-stacked heterobilayer transition metal dichalcogenides
• Effects of strong correlations on the nonlinear response in Weyl-Kondo semimetals
• Characterization of a correlated topological Kondo insulator in one dimension
• Why rare-earth ferromagnets are so rare: insights from the p-wave Kondo model
• Signature of surface state coupling in thin films of the topological Kondo insulator SmB${}_6$ from anisotropic magnetoresistance
• Understanding low-temperature bulk transport in samarium hexaboride without relying on in-gap bulk states
• Ferromagnetism and glassiness on the surface of topological insulators
• Ultrafast terahertz spectroscopy study of Kondo insulating thin film SmB${}_6$: evidence for an emergent surface state
• Two relativistic Kondo effects: Classification with particle and antiparticle impurities
• Spin-selective tunneling from nanowires of the candidate topological Kondo insulator SmB6
• Surface exceptional points in a topological Kondo insulator
• Finite temperature physics of $1D$ topological Kondo insulator: Stable Haldane phase, Emergent energy scale and Beyond
• Topology and Magnetism in the Kondo Insulator Phase Diagram
• Shadow surface states in topological Kondo insulators
• Universal properties of the near-gap spectra of SmB6: dynamical mean-field calculations and photoemission experiments
• Non-universal weak antilocalization effect in cubic topological Kondo insulators
• ${\mathcal{Z}}_2$ classification for a novel antiferromagnetic topological insulating phase in three-dimensional topological Kondo insulator
• An STM perspective on hexaborides: Surface states of the Kondo insulator SmB${}_6$
• Microwave Meissner Screening of Proximity coupled Topological Insulator / Superconductor Bilayers
• Realizing a topological diode effect on the surface of a topological Kondo insulator
• Low-energy excitations and transport functions of the one-dimensional Kondo insulator
• Surface reconstruction in a tight-binding model for the topological Kondo insulator SmB6
• Unconventional Josephson junctions with topological Kondo insulator weak links
• Inexorable Edge Kondo Breakdown in Topological Kondo Insulators
• Cotunneling into a Kondo lattice with odd hybridization
• Topology of SmB6 revisited by means of topological quantum chemistry
• Programmable Kondo Effect Formed by Landau Levels
• A Mean-Field Study of Quantum Oscillations in Two-Dimensional Kondo Insulators
• Magnetic effects on Chern Kondo insulator
• Magnetic and topological transitions in three-dimensional topological Kondo insulator
• Disordered 2D ferromagnetism at the surface of FeSi
• Valence transition in topological Kondo insulator
• Understanding one-dimensional topological Kondo insulator: Poor man's non-uniform antiferromagnetic mean-field theory versus quantum Monte Carlo simulation
• Mapping out the emergence of topological features in the highly alloyed topological Kondo insulators Sm${}_{1-x}{M}_x$B${}_6$ ($M$=Eu, Ce)
• Persistence of correlation-driven surface states in SmB6 under pressure
• Mott transition and magnetism in a fragile topological insulator
• Interaction-Induced Higher-Order Topological Insulator via Floquet Engineering
• Evolution of topological end states in the one-dimensional Kondo-Heisenberg model with site modulation