A Mean-Field Study of Quantum Oscillations in Two-Dimensional Kondo Insulators
arXiv:2402.04125 · doi:10.1103/PhysRevB.111.075131
Abstract
Magnetic oscillations in strongly correlated insulating systems have garnered interest due to oscillations seemingly originating from the bulk, despite an anticipated gapped spectrum. We use the large- mean-field theory to study the behavior of normal and topological Kondo insulators under a magnetic field. In both cases spinons acquire a charge and hybridize with electrons, producing magnetic oscillations that resemble two-band noninteracting systems. We show that in such band insulators magnetic oscillations are exponentially suppressed at weak magnetic fields. A self-consistent mean-field calculation for the Kondo insulators reveals that the temperature dependence of the oscillations departs from the noninteracting case due to the temperature and magnetic-field dependence of the hybridization, even though mean-field parameters remain homogeneous at low fields. Larger magnetic fields result in the Kondo breakdown, where the magnetic oscillation is solely due to the decoupled conduction electrons. These findings offer new insights into the magnetic properties of Kondo insulators, with implications for interpreting experimental results in heavy fermion materials like SmB.
References in corpus (55)
- Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells
- Topological Insulators with Inversion Symmetry
- Topological quantization of the spin Hall effect in two-dimensional paramagnetic semiconductors
- Topological Kondo Insulators
- Aharonov-Bohm interference in topological insulator nanoribbons
- Fractionalized Fermi liquids
- Amplitude / Higgs Modes in Condensed Matter Physics
- Topological approach to Luttinger's theorem and the Fermi surface of a Kondo lattice
- Low-temperature surface conduction in the Kondo insulator SmB
- Quantum oscillations in Kondo Insulator SmB
- Robust Surface Hall Effect and Nonlocal Transport in SmB6: Indication for an Ideal Topological Insulator
- Unconventional Fermi surface in an insulating state
- Quantum Oscillation from In-gap States and non-Hermitian Landau Level Problem
- A theory of Topological Kondo Insulators
- Direct measurement of the coherence length of edge states in the Integer Quantum Hall Regime
- Quantum Criticality without Tuning in the Mixed Valence Compound beta-YbAlB4
- Higgs Mode in Superconductors
- Quantum interference and Aharonov-Bohm oscillations in topological insulators
- Quantum Oscillations of Electrical Resistivity in an Insulator
- Quantum oscillations without a Fermi surface and the anomalous de Haas-van Alphen effect
- Kondo Breakdown in Topological Kondo Insulators
- Quantum oscillation in narrow-gap topological insulators
- Kondo Breakdown and Quantum Oscillations in SmB
- Interaction Driven Subgap Spin Exciton in the Kondo Insulator SmB6
- Excitons in topological Kondo insulators - theory of thermodynamic and transport anomalies in SmB
- Mixed-valence insulators with neutral Fermi surfaces
- Skyrme insulators: insulators at the brink of superconductivity
- Quantum oscillations in insulators with neutral Fermi surfaces
- Transport anomalies in a simplified model for a heavy electron quantum critical point
- Additional energy scale in SmB at low temperature
- Anomalous 3D bulk AC conduction within the Kondo gap of SmB single crystals
- Majoranas in mixed-valence insulators
- Theory of Quantum Oscillations of Magnetization in Kondo Insulators
- Quantum oscillations in strongly correlated topological Kondo insulators
- Quantum oscillations in the activated conductivity in excitonic insulators: possible application to monolayer WTe2
- Magnetic quantum oscillations of the topological insulator surface states
- Higher angular momentum Kondo liquids
- Quantum Oscillations from Fermi Sea
- Properties of the donor impurity band in mixed valence insulators
- Unconventional Magnetic Oscillations in Kagome Mott Insulators
- Quantum oscillations in interaction-driven insulators
- Theory of quantum oscillations in quasicrystals: Quantizing spiral Fermi surfaces
- Angle dependent quasiparticle weights in correlated metals
- Intrinsic bulk quantum oscillations in a bulk unconventional insulator SmB
- Large-N Approach to the Two-Channel Kondo Lattice
- -electron hybridised metallic Fermi surface in magnetic field-induced metallic YbB
- Parity Anomaly and Duality Web
- Quantum Oscillations in the Magnetisation and Density of States of Insulators
- Modification of the Lifshitz-Kosevich formula for anomalous quantum oscillations in inverted insulators
- Hall anomaly, Quantum Oscillations and Possible Lifshitz Transitions in Kondo Insulator YbB: Evidence for Unconventional Charge Transport
- Symplectic large-N theory of topological heavy-fermion semiconductors
- Inversion and magnetic quantum oscillations in symmetric periodic Anderson model
- de Haas van Alphen oscillations in hybridization-gap insulators as a sudden change in the diamagnetic moment of Landau levels
- Low-temperature theory of inversion and quantum oscillations in Kondo insulators
- Quantum oscillations of Kondo screening phases in strong magnetic fields