Raman Scattering Signatures of Kitaev Spin Liquids in A${}_2$ IrO${}_3$ Iridates

Abstract

We study theoretically the Raman scattering response $I(\omega )$ in the gapless quantum spin liquid phase of the Kitaev-Heisenberg model. The dominant polarization-independent contribution $I_K(\omega )$ reflects the density of states of the emergent Majorana fermions in the ground-state flux-sector. The integrability-breaking Heisenberg exchange generates a second contribution, whose dominant part $I_H(\omega )$ has the form of a quantum quench corresponding to an abrupt insertion of four $Z_2$ gauge fluxes. This results in a weakly polarization dependent response with a sharp peak at the energy of the flux excitation accompanied by broad features, which can be related to Majorana fermions in the presence of the perturbed gauge field. We discuss the experimental situation and explore more generally the influence of integrability breaking for Kitaev spin liquid response functions.

9 pages including supp. mat

References in corpus (8)

• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Inelastic Light Scattering From Correlated Electrons
• Exact results for spin dynamics and fractionization in the Kitaev Model
• Disorder in a quantum spin liquid: flux binding and local moment formation
• How to detect weak emergent broken-symmetries of the Kagome antiferromagnet from Raman spectroscopy
• Theory of two magnon Raman scattering in antiferromagnetic iron pnictides
• Raman scattering in a Heisenberg {\boldmath $S=1/2$} antiferromagnet on the triangular lattice
• $Z_3$ generalization of the Kitaev's spin-1/2 model

Cited by in corpus (68)

• Models and Materials for Generalized Kitaev Magnetism
• Scattering Continuum and Possible Fractionalized Excitations in $\alpha$-RuCl${}_3$
• Raman spectroscopic signature of fractionalized excitations in the harmonic-honeycomb iridates $\beta$- and $\gamma$-Li${}_2$IrO${}_3$
• Physical states and finite-size effects in Kitaev's honeycomb model: Bond disorder, spin excitations, and NMR lineshape
• The range of non-Kitaev terms and fractional particles in RuCl${}_3$
• Phonon dynamics in the Kitaev spin liquid
• Thermodynamic and Transport Properties in Disordered Kitaev Models
• Variational study of the Kitaev-Heisenberg-Gamma model
• Electronic and phonon excitations in α-RuCl${}_3$
• Magnon damping in the zigzag phase of the Kitaev-Heisenberg-$\Gamma$ model on a honeycomb lattice
• Towards Kitaev Spin Liquid in 3d Transition Metal Compounds
• Disorder upon disorder: localization effects in the Kitaev spin liquid
• Revealing frustrated local moment model for pressurized hyperhoneycomb iridate: paving a way toward quantum spin liquid
• High-pressure versus isoelectronic doping effect on the honeycomb iridate Na${}_2$IrO${}_3$
• Tunneling spectroscopy as a probe of fractionalization in 2D magnetic heterostructures
• Kitaev Quantum Spin Liquids
• Spin dynamics in the Kitaev model with disorder: Quantum Monte Carlo study of dynamical spin structure factor, magnetic susceptibility, and NMR relaxation rate
• Probing spinon nodal structures in three-dimensional Kitaev spin liquids
• Spinon magnetic resonance of quantum spin liquids
• Non-local spin correlation as a signature of Ising anyons trapped in vacancies of the Kitaev spin liquid
• Temperature evolution of the phonon dynamics in the Kitaev spin liquid
• Dynamics of a two-dimensional quantum spin-orbital liquid: spectroscopic signatures of fermionic magnons
• High temperature thermodynamics of the honeycomb-lattice Kitaev-Heisenberg model: A high temperature series expansion study
• Further insights into the thermodynamics of the Kitaev honeycomb model
• Signatures of fractional statistics in nonlinear pump-probe spectroscopy
• Thermal spin dynamics of Kitaev magnets $-$ scattering continua and magnetic field induced phases within a stochastic semiclassical approach
• Magnetoelectric generation of a Majorana-Fermi surface in Kitaev's honeycomb model
• Instabilities of spin-1 Kitaev spin liquid phase in presence of single-ion anisotropies
• Footprints of the Kitaev spin liquid in the Fano lineshapes of the Raman active optical phonons
• Magnon-spinon dichotomy in the Kitaev hyperhoneycomb $\beta$-Li${}_2$IrO${}_3$
• Kitaev Spin Liquid Candidate OsxCl3 Comprised of Honeycomb Nano-Domains
• Fractional Spin fluctuations and quantum liquid signature in Gd2ZnIrO6
• Resonant inelastic x-ray scattering spectra in the hyperhoneycomb iridate $\beta$-Li${}_2$IrO${}_3$: First principles calculations
• Nonlinear response of the Kitaev honeycomb lattice model in a weak magnetic field
• Probing Majorana wavefunctions in Kitaev honeycomb spin liquids with second-order two-dimensional spectroscopy
• Hydrated lithium intercalation into the Kitaev spin liquid candidate material $\alpha -$RuCl${}_3$
• Spectra of a Gapped Quantum Spin Liquid with a Strong Chiral Excitation on the Triangular Lattice
• Thermal conductivity of local moment models with strong spin-orbit coupling
• Scattering phenomena for spin transport in Kitaev spin liquid
• Phonon Dynamics in the Generalized Kitaev Spin Liquid
• Fluctuating Fractionalized Spins in Quasi Two-dimensional Magnetic V0.85PS3
• Realization and detection of Kitaev quantum spin liquid with Rydberg atoms
• Signatures of non-Loudon-Fleury Raman scattering in the Kitaev magnet $\beta$-Li${}_2$IrO${}_3$
• Bound states of fractionalized excitations in a modulated Kitaev spin liquid
• Anomalous thermal relaxation and pump-probe spectroscopy of 2D topologically ordered systems
• Dynamical response theory of interacting Majorana fermions and its application to generic Kitaev quantum spin liquids in a field
• Sachdev-Ye-Kitaev type physics in the strained Kitaev honeycomb model
• Raman Scattering Polarization and Single Spinon Identification in Two-Dimensional Kitaev Quantum Spin Liquids
• Local Raman Spectroscopy of Chiral Majorana Edge Modes in Kitaev Spin Liquids and Topological Superconductors
• Gauge symmetry of excited states in projected entangled-pair state simulations
• Probing emergent QED in quantum spin ice via Raman scattering of phonons: shallow inelastic scattering and pair production
• Dynamic structure factor of the antiferromagnetic Kitaev model in large magnetic fields
• Projective-symmetry-group analysis of inelastic light scattering in Kitaev spin balls
• Sound attenuation in the hyperhoneycomb Kitaev spin liquid
• Chiral excitations and the intermediate-field spin-liquid regime in the Kitaev magnet $\alpha$-RuCl${}_3$
• Controlling the RKKY interaction and heat transport in a Kitaev spin liquid via $Z_2$ flux walls
• Finite-momentum energy dynamics in a Kitaev magnet
• Polarized Raman Response of Two-Dimensional Quasiperiodic Antiferromagnets: Configuration-Interaction versus Green's Function Approaches
• Pulsed Neutron Spectroscopy of Low Dimensional Magnets: Past, Present, and Future
• Artificial Gauge Field Engineered Excited-State Topology: Control of Dynamical Evolution of Localized Spinons
• The Kekulé-Kitaev model: linear and non-linear responses and magnetic field effects
• Crystalline topological defects within response theory
• Raman spectroscopy of anyons in generic Kitaev spin liquids
• Field-induced phase transitions in the Kitaev-Heisenberg model: A sign-problem-free quantum Monte Carlo study and possible application to $\alpha$-RuCl3
• Non-Loudon-Fleury Raman scattering in spin-orbit coupled Mott insulators
• Non-Abelian statistics in light scattering processes across interacting Haldane chains
• Three-dimensional spin-orbital liquids
• Dynamical Response of the Kitaev Spin Liquid under Third-Nearest-Neighbor Heisenberg Interaction