Emergence of topological defects and spin liquid in a two-orbital spin-fermion model on the honeycomb lattice

Abstract

Stabilizing exotic quantum phases of matter, e.g. spin liquid, is an attractive topic in condensed matter. Here, by a Monte Carlo study of a two-orbital spin-fermion model on a honeycomb lattice, we show the cooperative effects of the orbital degeneracy of itinerant electrons and the exchange interaction of localized spins can significantly suppress both ferromagnetic and antiferromagnetic orders by generating topological defects and give rise to an intermediate spin liquid state via continuous phase transitions. This phase competition can also be achieved by tuning the electron filling. These results shed new light on realizing spin liquids on geometrically non-frustrated lattices.

arXiv comment7 pages, 4 figures

References in corpus (54)

• Anyons in an exactly solved model and beyond
• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Quantum Spin Liquids
• Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
• Quantum Spin Liquids
• Spin Dynamics of the Spin-1/2 Kagome Lattice Antiferromagnet ZnCu_3(OH)_6Cl_2
• Matrix Product States and Projected Entangled Pair States: Concepts, Symmetries, and Theorems
• Quantum spin-liquid emerging in two-dimensional correlated Dirac fermions
• On the Origin of Zigzag Magnetic Order in Iridium Oxide Na2IrO3
• Phase Separation in Electronic Models for Manganites
• Properties of a classical spin liquid: the Heisenberg pyrochlore antiferromagnet
• Fractionalized Fermi liquids
• U(1) Gauge Theory of the Hubbard Model : Spin Liquid States and Possible Application to k-(BEDT-TTF)_2 Cu_2 (CN)_3
• Absence of a Spin Liquid Phase in the Hubbard Model on the Honeycomb Lattice
• Absence of superconductivity in the pure two-dimensional Hubbard model
• Pinning the order: the nature of quantum criticality in the Hubbard model on honeycomb lattice
• Theory of a continuous Mott transition in two dimensions
• Fermionic quantum criticality in honeycomb and $\pi$-flux Hubbard models: Finite-size scaling of renormalization-group-invariant observables from quantum Monte Carlo
• Universal quantum criticality in the metal-insulator transition of two-dimensional interacting Dirac electrons
• Weyl-Kondo Semimetal in Heavy Fermion Systems
• Putting competing orders in their place near the Mott transition
• Kondo Breakdown and Hybridization Fluctuations in the Kondo-Heisenberg Lattice
• DMFT+NRG study of spin-orbital separation in a three-band Hund's metal
• Heavy-fermion and spin-liquid behavior in a Kondo lattice with magnetic frustration
• Skyrmion Crystal from RKKY Interaction Mediated by 2D Electron Gas
• Spin-Flavor Separation and Non-Fermi Liquid Behavior in the Multichannel Kondo Problem: A Large N Approach
• Static and Dynamical Properties of the Ferromagnetic Kondo Model with Direct Antiferromagnetic Coupling Between the localized $t_{2g}$ Electrons
• Weak Mott insulators on the triangular lattice: possibility of a gapless nematic quantum spin liquid
• Fermi and Non-Fermi behavior in the anisotropic Multichannel Kondo Model -- Bethe Ansatz solution
• Mott transition between a spin-liquid insulator and a metal in three dimensions
• Multi-Orbital Hubbard Model in Infinite Dimensions: Quantum Monte Carlo Calculation
• Strongly correlated materials from a numerical renormalization group perspective: How the Fermi-liquid state of Sr${}_2$RuO${}_4$ emerges
• Multi-channel Kondo impurity dynamics in a Majorana device
• Hundness versus Mottness in a three-band Hubbard-Hund model: On the origin of strong correlations in Hund metals
• The intermediate and spin-liquid phase of the half-filled honeycomb Hubbard model
• Anisotropy of Electrical Transport in Pnictide Superconductors Studied Using Monte Carlo Simulations of the Spin-Fermion Model
• Absence of spin liquid in non-frustrated correlated systems
• Magnetic Domains and Stripes in the Spin-Fermion Model for Cuprates
• Quantum disordered phase near the Mott transition in the staggered-flux Hubbard model on a square lattice
• The Kondo effect in bosonic spin liquids
• Fractionalized Fermi liquids and exotic superconductivity in the Kitaev-Kondo lattice
• Universal thermodynamics of an SU($N$) Fermi-Hubbard Model
• Phase competition in the double-exchange model on the frustrated pyrochlore lattice
• Dirac electrons in the square lattice Hubbard model with a $d$-wave pairing field: chiral Heisenberg universality class revisited
• Low-Energy Excitations of Skyrmion Crystals in a Centrosymmetric Kondo-Lattice Magnet: Decoupled Spin-Charge Excitations and Nonreciprocity
• Magnetic impurity in a $U(1)$-Spin Liquid with a Spinon Fermi-Surface
• Tree tensor-network real-time multiorbital impurity solver: Spin-orbit coupling and correlation functions in Sr${}_2$RuO${}_4$
• Curie-law crossover in spin liquids
• Mott physics in the half-filled Hubbard model on a family of vortex-full square lattices
• Symmetry-protected non-Fermi liquids, Kagome spin liquids, and the chiral Kondo lattice model
• Emergent Spinon Dispersion and Symmetry Breaking in Two-Channel Kondo Lattices
• ${\mathbb{Z}}_2$ metallic spin liquid on a frustrated Kondo lattice
• Precise ground state of multi-orbital Mott systems via the variational discrete action theory
• Quantum spin liquid in an RKKY-coupled two-impurity Kondo system