Tunneling spectroscopy of quantum spin liquids

Abstract

We examine the spectroscopic signatures of tunneling through a Kitaev quantum spin liquid (QSL) barrier in a number of experimentally relevant geometries. We combine contributions from elastic and inelastic tunneling processes and find that spin-flip scattering at the itinerant spinon modes gives rise to a gaped contribution to the tunneling conductance spectrum. We address the spectral modifications that arise in a magnetic field necessary to drive the candidate material $\alpha$-RuCl${}_3$ into a QSL phase, and we propose a lateral 1D tunnel junction as a viable setup in this regime. The characteristic spin gap is an unambiguous signature of the fractionalized QSL excitations, distinguishing it from magnons or phonons. The results of our analysis are generically applicable to a wide variety of topological QSL systems.

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Cited by in corpus (42)

• Magnetic memory and spontaneous vortices in a van der Waals superconductor
• Dynamics of visons and thermal Hall effect in perturbed Kitaev models
• Hole Spectral Function of a Chiral Spin Liquid in the Triangular Lattice Hubbard Model
• Kitaev Quantum Spin Liquids
• Scanning tunneling spectroscopy of Majorana zero modes in a Kitaev spin liquid
• An Exact Chiral Amorphous Spin Liquid
• Non-local spin correlation as a signature of Ising anyons trapped in vacancies of the Kitaev spin liquid
• Probing quantum spin liquids with a quantum twisting microscope
• Magnetoelectric generation of a Majorana-Fermi surface in Kitaev's honeycomb model
• Dynamical anyon generation in Kitaev honeycomb non-Abelian spin liquids
• Tunneling spectroscopic signatures of charge doping and associated Mott transition in $\alpha$-RuCl${}_3$ in proximity to graphite
• Probing magnetism in moiré heterostructures with quantum twisting microscopes
• Suppression of Antiferromagnetic Order by Strain in Honeycomb Cobaltate: Implication for Quantum Spin Liquid
• Probing Majorana wavefunctions in Kitaev honeycomb spin liquids with second-order two-dimensional spectroscopy
• Mott insulators in moiré transition metal dichalcogenides at fractional fillings: Slave-rotor mean-field theory
• Scattering phenomena for spin transport in Kitaev spin liquid
• Single-hole spectra of Kitaev spin liquids: from dynamical Nagaoka ferromagnetism to spin-hole fractionalization
• Spin Transport in Quantum Spin-Orbital Liquids
• Converting electrons into emergent fermions at a superconductor-Kitaev spin liquid interface
• Tunable moire spinons in magnetically encapsulated twisted van der Waals quantum spin-liquids
• Field-driven spatiotemporal manipulation of Majorana zero modes in a Kitaev spin liquid
• $Z_2$ flux binding to higher-spin impurities in the Kitaev spin liquid
• Spin Seebeck Effect as a Probe for Majorana Fermions in Kitaev Spin Liquids
• Drag resistance mediated by quantum spin liquids
• Theory of quasiparticle interference in Kitaev quantum spin liquids
• Behavior under magnetic field of resonance at the edge of the upper Hubbard band in 1T-TaS2
• Emergent Hyper-Magic Manifold in Twisted Kitaev Bilayers
• Possible Realization of Kitaev Spin Liquids in van der Waals Heterostructures of $\alpha$-RuCl${}_3$ and Cr$X_3$ ($X$=Cl and I)
• Evidence for distortion-induced local electric polarization in $\alpha$-RuCl${}_3$
• Hamiltonian-learning quantum magnets with non-local impurity tomography
• Field-direction Dependence of Majorana-mediated Spin Transport
• Promising regimes for the observation of topological degeneracy in spin chains
• Real-time control of non-Abelian anyons in Kitaev spin liquid under energy dissipation
• Electric polarization near vortices in the extended Kitaev model
• Scattering Theory of Chiral Edge Modes in Topological Magnon Insulators
• Robustness of Vacancy-Bound Non-Abelian Anyons in the Kitaev Model in a Magnetic Field
• Time-domain anyon interferometry in Kitaev honeycomb spin liquids and beyond
• Designer quantum matter in van der Waals heterostructures
• Tunable anyonic permeability across ${\mathbb{Z}}_2$ spin liquid junctions
• Majorana Signatures in Planar Tunneling through a Kitaev Spin Liquid
• Detecting and Distinguishing Majorana Zero Modes with the Scanning Tunneling Microscope
• Vortex creation and control in the Kitaev spin liquid by local bond modulations