Floquet engineering of Kitaev quantum magnets

Abstract

In recent years, there has been an intense search for materials realizing the Kitaev quantum spin liquid model. A number of edge-shared compounds with strong spin-orbit coupling, such as RuCl${}_3$ and iridates, have been proposed to realize this model. Nevertheless, an effective spin Hamiltonian derived from the microscopic model relevant to these compounds generally contains terms that are antagonistic toward the quantum spin liquid. This is consistent with the fact the zero magnetic field ground state of these materials is generally magnetically ordered. It is a pressing issue to identify protocols to drive the system to the limit of the Kitaev quantum spin model. In this work, we propose Floquet engineering of these Kitaev quantum magnets by coupling materials to a circularly polarized laser. We demonstrate that all the magnetic interactions can be tuned in situ by the amplitude and frequency of the laser, hence providing a route to stabilize the Kitaev quantum spin liquid phase.

arXiv comment11+6 pages

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• Engineering and probing non-Abelian chiral spin liquids using periodically driven ultracold atoms
• Electromagnetic signatures of chiral quantum spin liquid
• Emergent orbital magnetization in Kitaev quantum magnets
• Symmetry analysis of light-induced magnetic interactions via Floquet engineering
• Floquet engineering of the Lifshitz phase transition in the Hubbard model
• Cavity-Vacuum-Induced Chiral Spin Liquids in Kagome Lattices: Tuning and Probing Topological Quantum Phases via Cavity Quantum Electrodynamics
• Softening of $dd$ excitation in the resonant inelastic x-ray scattering spectra as a signature of Hund's coupling in nickelates
• From linear to circular polarized light -- Floquet engineering in Kitaev-Heisenberg materials with Lissajous figures
• Ultrafast spin dynamics in the proximate quantum spin liquid α-RuCl3
• Scalar spin chirality induced by a circularly polarized electric field in a classical kagome magnet
• A set-up for Hard X-ray Time-resolved Resonant Inelastic X-ray Scattering at SwissFEL
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• Ground state of the staggered Heisenberg-$\Gamma$ honeycomb model in a magnetic field
• Correlated Electrons and Magnetism in Double Perovskites
• Unveiling In-Gap States and Majorana Zero Modes in Superconductor-Topological Insulator Bilayer model