Quantum oscillations in Kondo Insulator SmB${}_6$

Abstract

In Kondo insulator samarium hexaboride SmB${}_6$, strong correlation and band hybridization lead to an insulating gap and a diverging resistance at low temperature. The resistance divergence ends at about 5 Kelvin, a behavior recently demonstrated to arise from the surface conductance. However, questions remain whether and where a topological surface state exists. Quantum oscillations have not been observed to map the Fermi surface. We solve the problem by resolving the Landau Level quantization and Fermi surface topology using torque magnetometry. The observed Fermi surface suggests a two dimensional surface state on the (101) plane. Furthermore, the tracking of the Landau Levels in the infinite magnetic field limit points to -1/2, which indicates a 2D Dirac electronic state.

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Cited by in corpus (183)

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• Quantum oscillations in insulators with neutral Fermi surfaces
• Emergence of supersymmetric quantum electrodynamics
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• Imaging emergent heavy Dirac fermions of a topological Kondo insulator
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• Anomalous 3D bulk AC conduction within the Kondo gap of SmB${}_6$ single crystals
• Fermi surfaces in Kondo insulators
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• Topological surface states interacting with bulk excitations in the Kondo insulator SmB${}_6$ revealed via planar tunneling spectroscopy
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• Anomalous Conductance Oscillations in the Hybridization Gap of InAs/GaSb Quantum Wells
• Pressure-induced quantum phase transitions in topological insulator YbB6
• Surface state reconstruction in ion-damaged SmB_6
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• 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${}_6$
• 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
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• Magnetic field-tuned quantum criticality in a Kondo insulator
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• Observation of the superconducting proximity effect in the surface state of SmB6 thin films
• Incomplete Protection of the Surface Weyl Cones of the Kondo Insulator SmB${}_6$: Spin Exciton Scattering
• Anomalous quantum oscillations and evidence for a non-trivial Berry phase in SmSb
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• Excitonic and Nematic Instabilities on the Surface of Topological Kondo Insulators
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• Cyclotron resonance inside the Mott gap: a fingerprint of emergent neutral fermions
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• Topological phase in $1D$ topological Kondo insulator: $Z_2$ topological insulator, Haldane-like phase and Kondo breakdown
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• Robust Surface States indicated by Magnetotransport in SmB6 Thin Films
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• Reduction of the low-temperature bulk gap in samarium hexaboride under high magnetic fields
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• Signature of surface state coupling in thin films of the topological Kondo insulator SmB${}_6$ from anisotropic magnetoresistance
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• de Haas van Alphen oscillations in hybridization-gap insulators as a sudden change in the diamagnetic moment of Landau levels
• ${\mathcal{Z}}_2$ classification for a novel antiferromagnetic topological insulating phase in three-dimensional topological Kondo insulator
• Topological nature of the Kondo insulator SmB${}_6$ and its sensitiveness to Sm vacancy
• 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
• Breakdown of bulk-projected isotropy in surface electronic states of topological Kondo insulator SmB${}_6$(001)
• Quantum oscillations in field-induced correlated insulators of a moiré superlattice
• Exactly solvable model of topological insulator realized on spin-1/2 lattice
• Effect of many-body interaction on de Haas-van Alphen oscillations in insulators
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• Low-energy excitations and transport functions of the one-dimensional Kondo insulator
• Tunable non-Lifshitz-Kosevich temperature dependence of Shubnikov-de Haas oscillation amplitudes in SmSb
• Quantum phase transition and destruction of Kondo effect in pressurized SmB6
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• Direct observation of surface state thermal oscillation in SmB6 oscillators
• Quasi-linear magnetoresistance and paramagnetic singularity in Hypervalent Bismuthide
• Topological surface states in the Kondo insulator YbB${}_{12}$ revealed via planar tunneling spectroscopy
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• Magnetic effects on Chern Kondo insulator
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• Persistence of correlation-driven surface states in SmB6 under pressure
• Band structure of Bi surfaces formed on Bi2Se3 upon exposure to air
• Nanoscale Conducting and Insulating Domains on YbB${}_6$
• Direct measurement of a remnant Fermi surface in SmB6
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• Quantum matter in ultrahigh magnetic fields
• Effect of valence fluctuations on the ground state properties of SmB6
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• Anomalous 4$f$ fine structure in TmSe${}_{1-x}$Te${}_x$ across the metal-insulator transition
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• Anomalous Landau levels and quantum oscillation in rotation-invariant insulators
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• Search for magnetoacoustic quantum oscillations in the insulating phase of YbB${}_{12}$