Quantum spin liquid from electron-phonon coupling
arXiv:2408.04002 · doi:10.1073/pnas.2426111122
Abstract
A quantum spin liquid (QSL) is an exotic insulating phase with emergent gauge fields and fractionalized excitations. However, the unambiguous demonstration of the existence of a QSL in a "non-engineered" microscopic model (or in any material) remains challenging. Here, using numerically-exact sign-problem-free quantum Monte Carlo simulations, we show that a QSL arises in a non-engineered electron-phonon model. Specifically, we investigate the ground-state phase diagram of the bond Su-Schrieffer-Heeger (SSH) model on a 2D triangular lattice at half filling (one electron per site) which we show includes a QSL phase which is fully gapped, exhibits no symmetry-breaking order, and supports deconfined fractionalized holon excitations. This suggests new routes for finding QSLs in realistic materials and high- superconductivity by lightly doping them.
15 pages (including supplemental materials), 10 figures
References in corpus (73)
- Fault-tolerant quantum computation by anyons
- Non-Abelian Anyons and Topological Quantum Computation
- Anyons in an exactly solved model and beyond
- Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
- Quantum Spin Liquids
- Quantum Spin Liquid States
- Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
- Spin Liquid Ground State of the Kagome Heisenberg Model
- Fractionalized excitations in the spin liquid state of a kagomé lattice antiferromagnet
- Quantum Spin Liquids
- Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid
- Zoo of quantum-topological phases of matter
- Proximate Kitaev Quantum Spin Liquid Behaviour in α-RuCl
- An RVB phase in the triangular lattice quantum dimer model
- Neutron tomography of magnetic Majorana fermions in a proximate quantum spin liquid
- Generic spin model for the honeycomb iridates beyond the Kitaev limit
- Lieb-Schultz-Mattis in Higher Dimensions
- Z_2 Gauge Theory of Electron Fractionalization in Strongly Correlated Systems
- Identifying Topological Order by Entanglement Entropy
- Projected wavefunction study of Spin-1/2 Heisenberg model on the Kagome lattice
- Herbertsmithite and the Search for the Quantum Spin Liquid
- A Field Guide to Spin Liquids
- Spin-Liquid State in the S = 1/2 Hyperkagome Antiferromagnet Na4Ir3O8
- The Physics Behind High-Temperature Superconducting Cuprates: The "Plain Vanilla" Version Of RVB
- Quantum orders in an exact soluble model
- Gapless spin-liquid ground state in the kagome antiferromagnet
- Topological approach to Luttinger's theorem and the Fermi surface of a Kondo lattice
- An exact chiral spin liquid with non-Abelian anyons
- Evidence for a spinon Fermi surface in a triangular lattice quantum spin liquid candidate
- Evidence for a Gapped Spin-Liquid Ground State in a Kagome Heisenberg Antiferromagnet
- Spin Liquid Ground State of the Spin-1/2 Square - Heisenberg Model
- On the stability of U(1) spin liquids in two dimensions
- Fractionalization in an Easy-axis Kagome Antiferromagnet
- Topological Entanglement Entropy of a Bose-Hubbard Spin Liquid
- Spin Liquid States on the Triangular and Kagome Lattices: A Projective Symmetry Group Analysis of Schwinger Boson States
- Signatures of Dirac cones in a DMRG study of the Kagome Heisenberg model
- A sufficient condition for the absence of the sign problem in the fermionic quantum Monte-Carlo algorithm
- Chiral spin liquid in a frustrated anisotropic kagome Heisenberg model
- Solving fermion sign problem in quantum Monte Carlo by Majorana representation
- Sign-problem-free quantum Monte Carlo of the onset of antiferromagnetism in metals
- Spin-orbital quantum liquid on the honeycomb lattice
- Global Phase Diagram of Competing Ordered and Quantum Spin Liquid Phases on the Kagomé Lattice
- Dirac Spin Liquid on the Spin-1/2 Triangular Heisenberg Antiferromagnet
- Constructing gapless spin liquid state for the spin-1/2 J1-J2 Heisenberg model on a square lattice
- Majorana-time-reversal symmetries: a fundamental principle for sign-problem-free quantum Monte Carlo simulations
- Unifying Description of Competing Orders in Two Dimensional Quantum Magnets
- Majorana Positivity and the Fermion sign problem of Quantum Monte Carlo Simulations
- Fermionic magnons, non-Abelian spinons, and spin quantum Hall effect from an exactly solvable Kitaev Hamiltonian with SU(2) symmetry
- Witnessing quantum criticality and entanglement in the triangular antiferromagnet KYbSe
- Theory of a competitive spin liquid state for weak Mott insulators on the triangular lattice
- High Temperature Superconductivity in a Lightly Doped Quantum Spin Liquid
- Universal Signatures of Fractionalized Quantum Critical Points
- Gapped magnetic ground state in quantum-spin-liquid candidate -(BEDT-TTF)-Cu(CN)
- The emergence of gapless quantum spin liquid from deconfined quantum critical point
- Valence-bond solid to antiferromagnet transition in the two-dimensional Su-Schrieffer-Heeger model by Langevin dynamics
- Quantum Spin Liquid with Emergent Chiral Order in the Triangular-lattice Hubbard Model
- Nontrivial Quantum Geometry and the Strength of Electron-Phonon Coupling
- Entanglement signatures of emergent Dirac fermions: kagome spin liquid & quantum criticality
- Topological superconductivity in the doped chiral spin liquid on the triangular lattice
- Phase Diagram of the Su-Schrieffer-Heeger-Hubbard model on a square lattice
- Antiferromagnetism induced by electron-phonon-coupling
- Quantum Spin Liquid with Even Ising Gauge Field Structure on Kagome Lattice
- Exact Spin Liquid Ground States of the Quantum Dimer Model on the Square and Honeycomb Lattices
- Efficient calculation of imaginary time displaced correlation functions in the projector auxiliary field quantum Monte-Carlo algorithm
- Robustness of Antiferromagnetism in the Su-Schrieffer-Heeger-Hubbard model
- Doping quantum spin liquids on the Kagome lattice
- 50 years of quantum spin liquids
- Nature of quantum spin liquids of the S=1/2 Heisenberg antiferromagnet on the triangular lattice: A parallel DMRG study
- Unveiling a critical stripy state in the triangular-lattice SU(4) spin-orbital model
- Emergence of Competing Orders and Possible Quantum Spin Liquid in SU(N) Fermions
- Phases and Exotic Phase Transitions of a Two-Dimensional Su-Schrieffer-Heeger Model
- Resonating Valence Bond States in an Electron-Phonon System
- Emergent Gauge Fields in Band Insulators