Nonlinear optics driven magnetism reorientation in semiconductors
arXiv:2402.10518 · doi:10.1021/acsnano.4c06453
Abstract
Based on nonlinear optics, we develop a band theory to elucidate how light could manipulate magnetization, which is rooted by the quantum geometric structure and topological nature of electronic wavefunctions. Their existence are determined by the light polarization and specific material symmetry, based on the magnetic group theory. In general, both circularly and linearly polarized light could exert an effective magnetic field and torque effect, to reorient the magnetization. They are contributed by spin and orbital angular momenta simultaneously. Aided by group theory and first-principles calculations, we illustrate this theory using a showcase example of monolayer NiCl2, showing that light irradiation effectively generates an out-of-plane effective magnetic torque, which lifts its in-plane easy magnetization. According to magnetic dynamic simulations, the in-plane magnetization could be switched to the out-of-plane direction in a few nanoseconds under a modest light intensity, demonstrating its ultrafast nature desirable for quantum manipulation.
6 figures
References in corpus (20)
- Restoring the density-gradient expansion for exchange in solids and surfaces
- Generalized gradient approximation for solids and their surfaces
- Observation of the orbital Hall effect in a light metal Ti
- Giant Orbital Hall Effect in Transition Metals: Origin of Large Spin and Anomalous Hall Effects
- Orbitronics: Orbital Currents in Solids
- Ballistic and shift currents in the bulk photovoltaic effect theory
- Intraband and interband spin-orbit torques in non-centrosymmetric ferromagnets
- Giant Biquadratic Exchange in 2D Magnets and its Role in Stabilizing Ferromagnetism of NiCl2 Monolayer
- Connecting Higher-Order Topology with the Orbital Hall Effect in Monolayers of Transition Metal Dichalcogenides
- Theory of spin Hall effect
- Intrinsic Nonlinear Spin Magnetoelectricity in Centrosymmetric Magnets
- Pure Bulk Orbital and Spin Photocurrent in Two-Dimensional Ferroelectric Materials
- Microscopic origin of magnetism in monolayer transition metal dihalides
- Time-Reversal-Even Nonlinear Current Induced Spin Polarization
- PT-symmetry enabled spin circular photogalvanic effect in antiferromagnetic insulators
- Light-Induced Static Magnetization: Nonlinear Edelstein Effect
- Femtosecond Demagnetization and Hot Hole Relaxation in Ferromagnetic GaMnAs
- Shift current response in elemental two-dimensional ferroelectrics
- Magnetic Proximity Evoked Colossal Bulk Photovoltaics in Crystalline Symmetric Layers
- Photo-magnetization in two-dimensional sliding ferroelectrics