Photocontrol of magnetic structure in an itinerant magnet

Abstract

We study the photoinduced magnetic transition in an itinerant magnet described by the double-exchange model, in which conduction electrons couple with localized spins through the ferromagnetic (FM) Hund coupling. It is shown that intense light applied to the FM ground state induces an antiferromagnetic (AFM) order, in contrast to the AFM-to-FM transition due to the photocarrier injection. In particular, we focus on the mechanism for instability of the FM structure by the light irradiation. The magnon spectrum in the Floquet state is formulated on the basis of the pertrubative expansion of the Floquet Green function. The magnon dispersion shows softening at momentum $(\pi ,\pi )$ in the square lattice with increasing the light amplitude, implying photoinduced AFM instability. This result is mainly attributed to a nonequilibrium electron distribution, which promotes low-energy Stoner excitations. The transient optical conductivity spectra characterized by interband excitations and Floquet sidepeaks are available to identify the photoinduced AFM state.

arXiv comment13 pages, 9 figures

References in corpus (51)

• Anomalous Hall effect
• Colossal Magnetoresistant Materials: The Key Role of Phase Separation
• Photovoltaic Hall effect in graphene
• Universal High-Frequency Behavior of Periodically Driven Systems: from Dynamical Stabilization to Floquet Engineering
• Atomic quantum gases in periodically driven optical lattices
• Interface-Induced Phenomena in Magnetism
• Electrodynamics of Correlated Electron Materials
• Nonequilibrium dynamical mean-field theory and its applications
• Dynamical control of matter-wave tunneling in periodic potentials
• Berry Phase Theory of Anomalous Hall Effect: Application to Colossal Magnetoresistance Manganites
• Topological nature of nonlinear optical effects in solids
• Superfluid-insulator transition in a periodically driven optical lattice
• Quantum anomalous Hall effect and related topological electronic states
• Phase Separation in Electronic Models for Manganites
• Brillouin-Wigner theory for high-frequency expansion in periodically driven systems: Application to Floquet topological insulators
• Ultrafast and reversible control of the exchange interaction in Mott insulators
• Chirality driven anomalous Hall effect in weak coupling regime
• Inverse magneto-refraction as a mechanism for laser modification of spin-spin exchange parameters and subsequent terahertz emission from iron oxides
• Correlated electron systems periodically driven out of equilibrium: Floquet + DMFT formalism
• Ultrafast modification of Hubbard $U$ in a strongly correlated material: ab initio high-harmonic generation in NiO
• Schrieffer-Wolff Transformation for Periodically Driven Systems: Strongly Correlated Systems with Artificial Gauge Fields
• Theory of Anderson pseudospin resonance with Higgs mode in superconductors
• Nonequilibrium steady states and transient dynamics of conventional superconductors under phonon driving
• Spin Excitation Spectrum of La${}_{1-x}{A}_x$MnO${}_3$
• Enhancement and sign change of magnetic correlations in a driven quantum many-body system
• Nonequilibrium Steady State of Photoexcited Correlated Electrons in the Presence of Dissipation
• Coherent destruction of tunneling, dynamic localization and the Landau-Zener formula
• Effective Hamiltonians for fastly driven many-body lattice systems
• Laser-Driven Multiferroics and Ultrafast Spin Current Generation
• Probing and controlling spin chirality in Mott insulators by circularly polarized laser
• Introduction to Nonequilibrium Statistical Mechanics with Quantum Field
• Theory of time-resolved optical spectroscopy on correlated electron systems
• Magnetization and phase transition induced by circularly polarized laser in quantum magnets
• Laser-induced magnetization curve
• Manipulating magnetism by ultrafast control of the exchange interaction
• Ultrafast light-induced magnetization dynamics in ferromagnetic semiconductors
• Nonlinear light-Higgs coupling in superconductors beyond BCS: Effects of the retarded phonon-mediated interaction
• Floquet Engineering in Quantum Chains
• Multiple amplitude modes in strongly-coupled phonon-mediated superconductors
• Light-Enhanced Spin Fluctuations and d-Wave Superconductivity at a Phase Boundary
• Floquet engineering of multi-orbital Mott insulators: applications to orthorhombic titanates
• Double-Exchange Interaction in Optically Induced Nonequilibrium State: A Conversion from Ferromagnetic to Antiferromagnetic Structure
• Laser-irradiated Kondo insulators : Controlling Kondo effect and topological phases
• Photoinduced charge and spin dynamics in strongly correlated electron systems
• Dynamical coupling and separation of multiple degrees of freedom in a photoexcited double-exchange system
• Nonequilibrium Steady States and Resonant Tunneling in Time-Periodically Driven Systems with Interactions
• Designing spin and orbital exchange Hamiltonians with ultrashort electric field transients
• Numerical Study of Photo-Induced Dynamics in Double-Exchange Model
• Photo-induced insulator-metal transition of a spin-electron coupled system
• Dynamical Quantum Anomalous Hall Effect in Strong Optical Fields
• Optical manipulation of magnetism in spin-charge coupled correlated electron system

Cited by in corpus (16)

• Entropy-cooled nonequilibrium states of the Hubbard model
• Floquet engineering correlated materials with unpolarized light
• Polarization as a tuning parameter for Floquet engineering: magnetism in the honeycomb, square, and triangular Mott insulators
• Nonequilibrium susceptibility in photoinduced Floquet states
• Photoinduced topological spin texture in a metallic ferromagnet
• Photo-induced Ferromagnetic and Superconducting Orders in Multi-orbital Hubbard Models
• High harmonic generation from electrons moving in topological spin textures
• Photocontrol of spin scalar chirality in centrosymmetric itinerant magnets
• Floquet engineering multi-channel Kondo physics
• Photoinduced 120-degree spin order in the Kondo-lattice model on a triangular lattice
• Impurity Screening and Friedel Oscillations in Floquet-driven Two-dimensional Metals
• Multiple Floquet Chern insulator phases in the spin-charge coupled triangular-lattice ferrimagnet: Crucial role of higher-order terms in the high-frequency expansion
• Magnon damping and mode softening in quantum double-exchange ferromagnets
• Electric-Field-Induced Antiferromagnetic Insulating State in a Metallic Ferromagnet
• Tangent equations of motion for nonlinear response functions
• Many-body correlations in Floquet steady-states: Frequency-resolved renormalization group of the driven Anderson impurity