Magnetic effects on Chern Kondo insulator
arXiv:1805.01383 · doi:10.1103/PhysRevB.98.125141
Abstract
We examine the Chern Kondo insulator proposed in a square optical lattice with staggered flux induced by - orbital hybridization by revisiting its realization and taking into account the magnetic effects for the Kondo phases. The Ruderman-Kittel-Kasuya-Yoshida interaction is analyzed at the weak - hybridization regime, with the anisotropic magnetic effects being discussed. Furthermore, the paramagnetic and magnetic phases coexisting with Kondo couplings are systematically investigated through the slave-boson theory, for which the rich phases are obtained, including the antiferromagnetic, collinear antiferromagnetic Kondo insulator, and Kondo metal phases. The magnetic orders are shown to enhance the effective Kondo hybridization compared with the case without taking into account magnetic effects, and exhibit different influences on the bulk topology. In particular, the antiferromagnetic order always enhances the topological phase by increasing bulk gap of the Chern Kondo phases. The results show the rich topological and magnetic effects obtained in the present Chern Kondo lattice model. We also investigate how to identify the topology and strong correlation effects through measuring the Hall conductance and double occupancy, which are achievable in ultracold atom experiments.
arXiv comment22 pages, 10 figures; The title is corrected! (OMG!)
References in corpus (57)
- Experimental realisation of the topological Haldane model
- Realization of the Hofstadter Hamiltonian with ultracold atoms in optical lattices
- Light-induced gauge fields for ultracold atoms
- Realizing the Harper Hamiltonian with Laser-Assisted Tunneling in Optical Lattices
- A Mott insulator of fermionic atoms in an optical lattice
- Topological Kondo Insulators
- Non-Abelian Topological Order in S-Wave Superfluids of Ultracold Fermionic Atoms
- Degenerate Quantum Gases with Spin-Orbit Coupling
- Tuning the scattering length with an optically induced Feshbach resonance
- Influence of nearly resonant light on the scattering length in low-temperature atomic gases
- superfluid from s-wave interactions of fermionic cold atoms
- Surface electronic structure of the topological Kondo insulator candidate correlated electron system SmB6
- Low-temperature surface conduction in the Kondo insulator SmB
- An SU(N) Mott insulator of an atomic Fermi gas realized by large-spin Pomeranchuk cooling
- Correlated Topological Insulators with Mixed Valence
- Engineering Ising-XY spin models in a triangular lattice via tunable artificial gauge fields
- Realistic Time-Reversal Invariant Topological Insulators With Neutral Atoms
- Engineering Time-Reversal Invariant Topological Insulators With Ultra-Cold Atoms
- Topological surface state in the Kondo Insulator Samarium Hexaboride
- Quantum oscillations in Kondo Insulator SmB
- Robust Surface Hall Effect and Nonlocal Transport in SmB6: Indication for an Ideal Topological Insulator
- Observation of in-gap surface states in the Kondo insulator SmB6 by photoemission
- Unconventional Fermi surface in an insulating state
- Realization of 2D Spin-orbit Interaction and Exotic Topological Orders in Cold Atoms
- Direct observation of the spin texture in strongly correlated SmB6 as evidence of the topological Kondo insulator
- Surface and Bulk Electronic Structure of the Strongly Correlated System SmB and Implications for a Topological Kondo Insulator
- Cubic Topological Kondo Insulators
- Controlling a magnetic Feshbach resonance with laser light
- Observation of symmetry-protected topological band with ultracold fermions
- Probing non-Abelian statistics of Majorana fermions in ultracold atomic superfluid
- Quantum dynamics with spatiotemporal control of interactions in a stable Bose-Einstein condensate
- Hybridization gap and Fano resonance in SmB
- Systematic study of Optical Feshbach Resonances in an ideal gas
- Fermi surface in the absence of a Fermi liquid in the Kondo insulator SmB
- Quantum Anomalous Hall Effect with Cold Atoms Trapped in a Square Lattice
- Kondo Breakdown in Topological Kondo Insulators
- Physics of higher orbital bands in optical lattices: a review
- Emergence of a coherent in-gap state in SmB6 Kondo insulator revealed by scanning tunneling spectroscopy
- Skyrme insulators: insulators at the brink of superconductivity
- Kondo hybridisation and the origin of metallic states at the (001) surface of SmB6
- Selective Mott transition and heavy fermions
- Anomalous 3D bulk AC conduction within the Kondo gap of SmB single crystals
- Coexistence of light and heavy surface states in a topological multi-band Kondo insulator
- Bulk Fermi surface of charge-neutral excitations in SmB6 or not: a heat-transport study
- Kondo Insulators Modeled by the One Dimensional Anderson Lattice: A Numerical Renormalization Group Study
- End states in a 1-D topological Kondo insulator
- Pairing Superfluidity in Spin-Orbit Coupled Ultracold Fermi Gases
- Fractionalized Fermi liquid on the surface of a topological Kondo insulator
- Chiral Topological Orders in an Optical Raman Lattice
- Topological Kondo insulators in one dimension: Continuous Haldane-type ground-state evolution from the strongly-interacting to the non-interacting limit
- Haldane phase in one-dimensional topological Kondo insulators
- Chern Kondo Insulator in an Optical Lattice
- Synthetic topological Kondo insulator in a pumped optical cavity
- Many-Body Effects in Topological Kondo Insulators
- Tunable topological phases with fermionic atoms in a one-dimensional flux lattice
- Equilibrium angular momentum and edge current in Bose-condensed cold atom systems with k-space Berry curvature
- Topological Fulde-Ferrell Superfluids in Triangular Lattices