Dynamics and transport of the Z_2 spin liquid: application to kappa-(ET)2Cu2(CN)3

Abstract

We describe neutron scattering, NMR relaxation, and thermal transport properties of Z_2 spin liquids in two dimensions. Comparison to recent experiments on the spin S=1/2 triangular lattice antiferromagnet in kappa-(ET)2Cu2(CN)3 shows that this compound may realize a Z_2 spin liquid. We argue that the topological `vison' excitations dominate thermal transport, and that recent thermal conductivity experiments by M. Yamashita et al. have observed the vison gap.

arXiv comment4 pages, 2 figures; (v2) added refs and minor changes; (v3) updated ref on experiment; (v4) added supplement with calculational details

References in corpus (23)

• Fault-tolerant quantum computation by anyons
• Spin Liquid State in an Organic Mott Insulator with Triangular Lattice
• Theory of the Nernst effect near quantum phase transitions in condensed matter, and in dyonic black holes
• Variational study of triangular lattice spin-1/2 model with ring exchanges and spin liquid state in κ-(ET)_2 Cu_2 (CN)_3
• Theory of Two-Dimensional Quantum Heisenberg Antiferromagnets with a Nearly Critical Ground State
• Quantum orders in an exact soluble model
• Ising models of quantum frustration
• Spin Liquid States on the Triangular and Kagome Lattices: A Projective Symmetry Group Analysis of Schwinger Boson States
• A Class of $P,T$-Invariant Topological Phases of Interacting Electrons
• Multicritical phenomena in O(n_1)+O(n_2)-symmetric theories
• Phase diagram for a class of spin-half Heisenberg models interpolating between the square-lattice, the triangular-lattice and the linear chain limits
• Strong electronic correlations in superconducting organic charge transfer salts
• Amperean Pairing Instability in the U(1) Spin Liquid State with Fermi Surface and Application to $\kappa -(BEDT-TTF{)}_{2}C{u}_2(CN{)}_3$
• Fractionalization, topological order, and cuprate superconductivity
• Emergence of inhomogeneous moments from spin liquid in the triangular-lattice Mott insulator $\kappa$-(ET)${}_2$Cu${}_2$(CN)${}_3$
• Universal Magnetic Properties of Frustrated Quantum Antiferromagnets in Two Dimensions
• Eliminating leading corrections to scaling in the 3-dimensional O(N)-symmetric phi^4 model: N=3 and 4
• Collective cyclotron motion of the relativistic plasma in graphene
• From Neel long-range order to spin-liquids in the multiple-spin exchange model
• Mott Transition in a Valence Bond Solid Insulator with a Triangular Lattice
• Ordering in Cs2CuCl4: Is there a proximate spin liquid?
• Quantum Dimer Model on the triangular lattice: Semiclassical and variational approaches to vison dispersion and condensation
• Insulator-metal transition on the triangular lattice

Cited by in corpus (56)

• Quantum Spin Liquid States
• Quantum frustration in organic Mott insulators: from spin liquids to unconventional superconductors
• Large field-induced gap of Kitaev-Heisenberg paramagnons in $\alpha$-RuCl${}_3$
• Quantum spin-liquid behavior in the spin-1/2 random Heisenberg antiferromagnet on the triangular lattice
• Dynamical and Topological Properties of the Kitaev Model in a [111] Magnetic Field
• Static and dynamical spin correlations of the S=1/2 random-bond antiferromagnetic Heisenberg model on the triangular and the kagome lattices
• The Paired Electron Crystal: order from frustration in the quarter-filled band
• Theory of a competitive spin liquid state for weak Mott insulators on the triangular lattice
• Pressure-Tuned Exchange Coupling of a Quantum Spin Liquid in the Molecular Triangular Lattice $\kappa$-(ET)${}_2$Ag${}_2$(CN)${}_3$
• Large Thermal Hall Effect in $\alpha$-RuCl${}_3$: Evidence for Heat Transport by Kitaev-Heisenberg Paramagnons
• Phase diagram of the Hubbard model on the anisotropic triangular lattice
• Novel Pauli-paramagnetic quantum phase in a Mott insulator
• Magnetic field induced intermediate quantum spin-liquid with a spinon Fermi surface
• Diagnosing phases of magnetic insulators via noise magnetometry with spin qubits
• Spin-liquid and magnetic phases in the anisotropic triangular lattice: the case of $\kappa$-(ET)${}_2$X
• Incommensurate correlations in the anisotropic triangular Heisenberg lattice
• Critical Spin Liquid versus Valence Bond Glass in Triangular Lattice Organic $\kappa$-(ET)${}_2$Cu${}_2$(CN)${}_3$
• Phase diagram of the anisotropic triangular lattice Hubbard model
• Statistics of fractionalized excitations through threshold spectroscopy
• SU(2)-invariant spin liquids on the triangular lattice with spinful Majorana excitations
• Coherent Transmutation of Electrons into Fractionalized Anyons
• Dynamics of visons and thermal Hall effect in perturbed Kitaev models
• Unconventional Quantum Critical Points
• Instabilities of Spin-Liquid States in a Quantum Kagome Antiferromagnet
• Spin-charge-entangled non-Fermi liquid in a candidate material for a doped spin liquid
• Three Dimensional Z2 Topological Phases enriched by Time-Reversal Symmetry
• SU(2)-invariant Majorana spin liquid with stable parton Fermi surfaces in an exactly solvable model
• Thermal-transport studies of Two-dimensional Quantum Spin Liquids
• Majorana Spin Liquids on a two-leg ladder
• Exotic continuous quantum phase transition between Z2 topological spin liquid and Neel order
• Quantum Spin Hall, triplet Superconductor, and topological liquid on the honeycomb lattice
• Electrodynamics of quantum spin liquids
• Quantum Spin Liquid State in the Disordered Triangular Lattice Sc2Ga2CuO7
• An Exact Diagonalization Study of the Anisotropic Triangular Lattice Heisenberg Model Using Twisted Boundary Conditions
• Signatures of fractional statistics in nonlinear pump-probe spectroscopy
• Chern-Simons-Matter Theory and Mirror Symmetry
• Quantum phase transitions of antiferromagnets and the cuprate superconductors
• Dynamical reduction of the dimensionality of exchange interactions and the "spin-liquid" phase of $\kappa$-(BEDT-TTF)${}_{2}X$
• Probing the Mott Physics in $\kappa$-(BEDT-TTF)${}_2$X Salts via Thermal Expansion
• Ground-state and thermodynamic properties of the spin-$\frac{1}{2}$ Heisenberg model on the anisotropic triangular lattice
• Ultralow-temperature heat transport in the quantum spin liquid candidate Ca10Cr7O28 with bilayer kagome lattice
• Low-Energy Excitations in Quantum Spin-Liquids Identified by Optical Spectroscopy
• Quantum critical spin-liquid-like behavior in S = 1/2 quasikagome lattice CeRh1-xPdxSn investigated using muon spin relaxation and neutron scattering
• Destroying a topological quantum bit by condensing Ising vortices
• Pseudospin heat conductivity in the $J_{\mathrm{eff}}=1/2$ antiferromagnet Sr${}_2$IrO${}_4$
• Anomalous thermal relaxation and pump-probe spectroscopy of 2D topologically ordered systems
• Deconfined criticality for the S=1 spin model on the spatially anisotropic triangular lattice
• Dynamic structure factor of the antiferromagnetic Kitaev model in large magnetic fields
• Phase structure of $Z_2$ gauge theories for frustrated antiferromagnets in two dimensions
• Spinon Majorana fermions
• Thermal features of Heisenberg antiferromagnets on edge- versus corner-sharing triangular-based lattices: A message from spin waves
• Phase Structure of Anisotropic Antiferromagnetic Heisenberg Model on Layered Triangular Lattice: Spiral State and Deconfined Spin Liquid
• A Quantum Fidelity Study of the Anisotropic Next-Nearest-Neighbour Triangular Lattice Heisenberg Model
• Quantum Phases and Spin Liquid Properties of 1T-TaS2
• Slow spin dynamics in the hyper-honeycomb Lattice [(C2H5)3NH]2Cu2(C2O4)3 revealed by 1H NMR studies
• Microscopic evidence of a field-induced critical spin-liquid state in a frustrated metal