Breathing-Driven Metal-Insulator Transition in Correlated Kagome Systems
arXiv:2506.07529 · doi:10.1088/0256-307X/42/9/090712
Abstract
Inspired by the recent discovery of breathing kagome materials \(\rm Nb_3Cl_8\) and \(\rm Nb_3TeCl_7\), we have explored the influence of the breathing effect on the Hubbard model of the kagome lattice. Utilizing the determinant quantum Monte Carlo method, we first investigated the average sign problem in the breathing kagome lattice, which is significantly affected by both the breathing strength and the interaction strength. Secondly, we calculated the electronic kinetic energy, the direct current conductivity, and the electronic density of states at the Fermi level to determine the critical interaction strength for the metal-insulator transition. Our results indicate that the breathing effect, in conjunction with the interaction strength, drives the kagome system from a metal to an insulator. Finally, we evaluated the magnetic properties and constructed a phase diagram incorporating both transport and magnetic properties. The phase diagram reveals that as the interaction strength increases, the system transitions from a paramagnetic metal to a Mott insulator. Our research provides a theoretical guidance for utilizing the breathing effect to control the band gaps, conductivity, and magnetic properties of kagome materials with electronic interactions.
7 Pages and 7 Figures
References in corpus (44)
- Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
- Fractionalized excitations in the spin liquid state of a kagomé lattice antiferromagnet
- Massive Dirac fermions in a ferromagnetic kagome metal
- Spin Dynamics of the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_3(OH)_6Cl_2
- Roton pair density wave and unconventional strong-coupling superconductivity in a topological kagome metal
- Topological Anderson Insulator
- Topological kagome magnets and superconductors
- Charge density waves and electronic properties of superconducting kagome metals
- Double superconducting dome and triple enhancement of Tc in the kagome superconductor CsV3Sb5 under high pressure
- Evidence for a Gapped Spin-Liquid Ground State in a Kagome Heisenberg Antiferromagnet
- Discovery of charge density wave in a correlated kagome lattice antiferromagnet
- Nature of unconventional pairing in the kagome superconductors AVSb
- Novel magnetic states and nematic spin chirality in the kagome lattice metal YMnSn
- Deviations from Fermi-liquid behavior above in 2D short coherence length superconductors
- Quantum states and intertwining phases in kagome materials
- In-plane magnetic field induced double fan spin structure with -axis component in metallic kagome antiferromagnet YMnSn
- Near-room-temperature giant topological Hall effect in antiferromagnetic kagome metal YMn6Sn6
- Observation of topological flat bands in the kagome semiconductor NbCl
- Emergence of new van Hove singularities in the charge density wave state of a topological kagome metal RbV3Sb5
- Superconductor-Insulator Transition in a Disordered Electronic System
- Superconducting Transitions in Flat Band Systems
- Superconducting diode effect and interference patterns in Kagome CsV3Sb5
- Mott transition in Kagomé lattice Hubbard model
- Mapping the chemical potential dependence of current-induced spin polarization in a topological insulator
- Conducting phase in the two-dimensional disordered Hubbard model
- Room temperature magnetism on the zigzag edges of phosphorene nanoribbons
- Non-trivial band topology and orbital-selective electronic nematicity in a new titanium-based kagome superconductor
- A correlated Anderson insulator on the honeycomb lattice
- Local gate control of Mott metal-insulator transition in a 2D metal-organic framework
- Real-space cluster dynamical mean-field theory: Center focused extrapolation on the one- and two particle level
- Tunable magnetism and electron correlation in Titanium-based Kagome metals RETi3Bi4 (RE = Yb, Pr, and Nd) by rare-earth engineering
- Variational cluster approach to thermodynamic properties of interacting fermions at finite temperatures: A case study of the two-dimensional single-band Hubbard model at half filling
- Flat-Band Enhanced Antiferromagnetic Fluctuations and Superconductivity in Pressurized CsCrSb
- Variational Monte Carlo Study of the 1/9 Magnetization Plateau in Kagome Antiferromagnets
- Charge Dynamics of an Unconventional Three-Dimensional Charge Density Wave in Kagome FeGe
- Thermodynamic, magnetic and transport properties of the repulsive Hubbard model on the kagome lattice
- Insulator-to-Metal Transition and Isotropic Gigantic Magnetoresistance in Layered Magnetic Semiconductors
- Intermediate Phase in Interacting Dirac Fermions with Staggered Potential
- Doping-dependent metal-insulator transition in a disordered Hubbard model
- Inducing a metal-insulator transition in disordered interacting Dirac fermion systems via an external magnetic field
- Strong ferromagnetic fluctuations in a doped checkerboard lattice
- Doping driven metal-insulator transition in disordered graphene
- An intermediate phase induced by dilution in a correlated Dirac Fermi system
- Sampling Electronic Fock States using Determinant Quantum Monte Carlo