Sample dependence of the half-integer quantized thermal Hall effect in the Kitaev candidate $\alpha$-RuCl${}_3$

Abstract

We have investigated the sample dependence of the half-integer thermal Hall effect in $\alpha$-RuCl${}_3$ under a magnetic field tilted 45 degree from the $c$ axis to the $a$ axis. We find that the sample with the largest longitudinal thermal conductivity (${\kappa }_{xx}$) shows the half-integer quantized thermal Hall effect expected in the Kitaev model. On the other hand, the quantized thermal Hall effect was not observed in the samples with smaller ${\kappa }_{xx}$. We suggest that suppressing the magnetic scattering effects on the phonon thermal conduction, which broaden the field-induced gap protecting the chiral edge current of the Majorana fermions, is important to observe the quantized thermal Hall effect.

arXiv comment5 pages, 3 figures + Supplemental Material

References in corpus (29)

• 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
• Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid
• Proximate Kitaev Quantum Spin Liquid Behaviour in α-RuCl${}_3$
• $\alpha$-RuCl3: a Spin-Orbit Assisted Mott Insulator on a Honeycomb Lattice
• Neutron tomography of magnetic Majorana fermions in a proximate quantum spin liquid
• Models and Materials for Generalized Kitaev Magnetism
• The monoclinic crystal structure of $\alpha$-RuCl${}_3$ and the zigzag antiferromagnetic ground state
• Scattering Continuum and Possible Fractionalized Excitations in $\alpha$-RuCl${}_3$
• Magnetic order in $\alpha$-RuCl${}_3$: a honeycomb lattice quantum magnet with strong spin-orbit coupling
• Low-temperature crystal and magnetic structure of $\alpha$-RuCl3
• Successive magnetic phase transitions in $\mathbf{\alpha }$-RuCl${}_3$: XY-like frustrated magnet on the honeycomb lattice
• Kitaev magnetism in honeycomb RuCl3 with intermediate spin-orbit coupling
• Fermionic response from fractionalization in an insulating two-dimensional magnet
• Hunting Majorana Fermions in Kitaev Magnets
• Phase Diagram of $\alpha$-RuCl${}_3$ in an in-plane Magnetic Field
• Unusual thermal Hall effect in a Kitaev spin liquid candidate $\alpha$-RuCl${}_3$
• Large field-induced gap of Kitaev-Heisenberg paramagnons in $\alpha$-RuCl${}_3$
• Quantization of the thermal Hall conductivity at small Hall angles
• Disorder in a quantum spin liquid: flux binding and local moment formation
• Approximately quantized thermal Hall effect of chiral liquids coupled to phonons
• Site dilution in Kitaev's honeycomb model
• Anisotropic susceptibilities in the honeycomb Kitaev system $\alpha$-RuCl${}_3$
• Large Thermal Hall Effect in $\alpha$-RuCl${}_3$: Evidence for Heat Transport by Kitaev-Heisenberg Paramagnons
• Thermodynamic and Transport Properties in Disordered Kitaev Models
• Magnetism in spin models for depleted honeycomb-lattice iridates: Spin-glass order towards percolation
• Anderson-Kitaev spin liquid
• Localised zero-energy modes in the Kitaev model with vacancy-disorder
• Exactly Solvable Topological Chiral Spin Liquid with Random Exchange

Cited by in corpus (89)

• Robustness of the thermal Hall effect close to half-quantization in a field-induced spin liquid state
• Evidence of a Phonon Hall Effect in the Kitaev Spin Liquid Candidate $\alpha$-RuCl${}_3$
• Magnetic Anisotropy in Spin-3/2 with Heavy Ligand in Honeycomb Mott Insulators: Application to CrI${}_3$
• Identification of Magnetic Interactions and High-field Quantum Spin Liquid in $\alpha$-RuCl${}_3$
• Beyond Kitaev physics in strong spin-orbit coupled magnets
• Engineering and probing non-Abelian chiral spin liquids using periodically driven ultracold atoms
• Unusual heat transport of the Kitaev material Na${}_2$Co${}_2$TeO${}_6$: putative quantum spin liquid and low-energy spin excitations
• Thermal Hall effects in quantum magnets
• Experimental signatures of quantum and topological states in frustrated magnetism
• STM as a single Majorana detector of Kitaev's chiral spin liquid
• Dynamics of visons and thermal Hall effect in perturbed Kitaev models
• Magnetoelastic coupling and effects of uniaxial strain in $\alpha$-RuCl${}_3$ from first principles
• Giant Phonon Anomalies in the Proximate Kitaev Quantum Spin Liquid $\alpha$-RuCl${}_3$
• Angle-dependent thermodynamics of $\alpha$-RuCl${}_3$
• Planar Thermal Hall Effects in Kitaev Spin Liquid Candidate Na2Co2TeO6
• Identification of a Kitaev Quantum Spin Liquid by Magnetic Field Angle Dependence
• Origin of oscillatory structures in the magnetothermal conductivity of the putative Kitaev magnet $\alpha$-RuCl${}_3$
• Majorana-fermion origin of the planar thermal Hall effect in the Kitaev magnet $\alpha$-RuCl${}_3$
• Oscillations in the magnetothermal conductivity of $\mathbf{\alpha }$-RuCl${}_3$: Evidence of transition anomalies
• Topological Thermal Hall Effect of Magnons in Magnetic Skyrmion Lattice
• Extrinsic phonon thermal Hall transport from Hall viscosity
• Symmetry-based requirement for the measurement of electrical and thermal Hall conductivity under an in-plane magnetic field
• Stacking disorder and thermal transport properties of $\alpha$-RuCl${}_3$
• Kitaev Quantum Spin Liquids
• Emergent SU(3) magnons and thermal Hall effect in the antiferromagnetic skyrmion lattice
• Extraction of the interaction parameters for $\alpha -$RuCl${}_3$ from neutron data using machine learning
• Investigation of the magnetoelastic coupling anisotropy in the Kitaev material $\alpha$-RuCl${}_3$
• An Exact Chiral Amorphous Spin Liquid
• The sample-dependent and sample-independent thermal transport properties of $\alpha$-RuCl${}_3$
• Field-angle dependence of thermal Hall conductivity in magnetically ordered Kitaev-Heisenberg system
• Evidence for the first-order topological phase transition in a Kitaev spin liquid candidate $\alpha$-RuCl${}_3$
• Phonon Hall viscosity from phonon-spinon interactions
• Thermal Hall Effect in the Kitaev-Heisenberg System with Spin-Phonon Coupling
• Thermal anyon interferometry in phonon-coupled Kitaev spin liquids
• Thermal spin dynamics of Kitaev magnets $-$ scattering continua and magnetic field induced phases within a stochastic semiclassical approach
• Dynamical anyon generation in Kitaev honeycomb non-Abelian spin liquids
• Flavor-wave theory with quasiparticle damping at finite temperatures: Application to chiral edge modes in the Kitaev model
• Phononic-magnetic dichotomy of the thermal Hall effect in the Kitaev-Heisenberg candidate material Na${}_2$Co${}_2$TeO${}_6$
• Defect-Induced Low-Energy Majorana Excitations in the Kitaev Magnet $\alpha$-RuCl${}_3$
• Honeycomb oxide heterostructure: a new platform for Kitaev quantum spin liquid
• Mechanism of carrier doping induced magnetic phase transitions in two-dimensional materials
• Acoustic phonon dispersion of $\alpha$-RuCl${}_3$
• Electric-field control of magnetic anisotropies: applications to Kitaev spin liquids and topological spin textures
• Phonons and phase symmetries in bulk $CrC{l}_3$ from scattering measurements and theory
• Two-step growth of high-quality single crystals of the Kitaev magnet $\alpha$-RuCl${}_3$
• Dissipationless Spin Current Generation in Kitaev's Chiral Spin Liquid
• Non-Abelian Anyons and Non-Abelian Vortices in Topological Superconductors
• Thermodynamic evidence for field-angle dependent Majorana gap in a Kitaev spin liquid
• Magnetothermal transport in ultraclean single crystals of Kitaev magnet $\alpha$-RuCl${}_3$
• Measuring Topological Order
• Asymmetric modulation of Majorana excitation spectra and nonreciprocal thermal transport in the Kitaev spin liquid under a staggered magnetic field
• Dynamics of fractionalized mean-field theories: consequences for Kitaev materials
• Field-Angle-Resolved Specific Heat in Na${}_2$Co${}_2$TeO${}_6$: Evidence against Kitaev Quantum Spin Liquid
• Topological phase diagrams of in-plane field polarized Kitaev magnets
• Field-driven spatiotemporal manipulation of Majorana zero modes in a Kitaev spin liquid
• Extended Quantum Spin Liquid with Spinon-like Excitations in an Anisotropic Kitaev-Gamma Model
• Converting electrons into emergent fermions at a superconductor-Kitaev spin liquid interface
• Engineering the Kitaev spin liquid in a quantum dot system
• Spin Seebeck Effect as a Probe for Majorana Fermions in Kitaev Spin Liquids
• Multinode quantum spin liquids in extended Kitaev honeycomb models: the view from variational Monte Carlo
• Interedge spin resonance in the Kitaev quantum spin liquid
• Theory of quasiparticle interference in Kitaev quantum spin liquids
• Phonon Dynamics in the Chiral Kitaev Spin Liquid
• Gauge Field Dynamics in Multilayer Kitaev Spin Liquids
• Giant anisotropic magnetoresistance in few-layer α-RuCl3 tunnel junctions
• Probing emergent QED in quantum spin ice via Raman scattering of phonons: shallow inelastic scattering and pair production
• Successive topological phase transitions in two distinct spin-flop phases on the honeycomb lattice
• High-field quantum spin liquid transitions and angle-field phase diagram of Kitaev magnet $\alpha$-RuCl${}_3$
• Emergent Hyper-Magic Manifold in Twisted Kitaev Bilayers
• Chiral excitations and the intermediate-field spin-liquid regime in the Kitaev magnet $\alpha$-RuCl${}_3$
• Possible Realization of Kitaev Spin Liquids in van der Waals Heterostructures of $\alpha$-RuCl${}_3$ and Cr$X_3$ ($X$=Cl and I)
• Bulk excitations in ultraclean $\alpha$-RuCl${}_3$: Quantitative evidence for Majorana dispersions in a Kitaev quantum spin liquid
• Intermediate phases in $\alpha$-RuCl${}_3$ under in-plane magnetic field via interlayer spin interactions
• Real-time control of non-Abelian anyons in Kitaev spin liquid under energy dissipation
• Majorana Gap Formation in the Anisotropic Kitaev Model with Ordered Flux Configuration
• Assembling Kitaev honeycomb spin liquids from arrays of 1D symmetry protected topological phases
• Formulation of spin Nernst effect for spin-nonconserving insulating magnets
• Thermal decomposition of the Kitaev material $\alpha$-RuCl${}_3$ and its influence on low-temperature behavior
• Extrinsic contribution to bosonic thermal Hall transport
• Thermal Hall conductivity of semimetallic graphite dominated by ambipolar phonon drag
• Angular-Dependent Thermal Hall Effect in a Honeycomb Magnet: Disentangling Kitaev and Dzyaloshinskii-Moriya Interactions
• Spin-phonon coupling and thermal Hall effect in the Kitaev model
• Field-induced phase transitions in the Kitaev-Heisenberg model: A sign-problem-free quantum Monte Carlo study and possible application to $\alpha$-RuCl3
• Robustness of Vacancy-Bound Non-Abelian Anyons in the Kitaev Model in a Magnetic Field
• Phonon Thermal Hall Effect: The Roles of Disorder, Annealing, and Metallic Contacts
• Field-Angle Dependence of Phonon Thermal Hall Effect in Na2X2TeO6 (X = Co, Zn)
• The field-angle anisotropy of proximate Kitaev systems under an in-plane magnetic field
• Anomalies in the thermal conductivity of honeycomb antiferromagnet MnPS${}_3$
• The Role of the Third Dimension in Searching Majorana Fermions in $\alpha$-RuCl${}_3$ via Phonons