Empowering Control of Antiferromagnets by THz-induced Spin Coherence

Abstract

Finding efficient and ultrafast ways to control antiferromagnets is believed to be instrumental in unlocking their potential for magnetic devices operating at THz frequencies. Still, it is challenged by the absence of net magnetization in the ground state. Here, we show that the magnetization emerging from a state of coherent spin precession in antiferromagnetic iron borate FeBO${}_3$ can be used to enable the nonlinear coupling of light to another, otherwise weakly susceptible, mode of spin precession. This nonlinear mechanism can facilitate conceptually new ways of controlling antiferromagnetism.

19 pages, 9 figures

References in corpus (4)

• Twisted magnetic patterns: Exploring the Dzyaloshinskii--Moriya vector
• Terahertz-Light Driven Coupling of Antiferromagnetic Spins to Lattice
• Two-dimensional THz spectroscopy of nonlinear phononics in the topological insulator ${\mathrm{MnBi}}_2{\mathrm{Te}}_4$
• Sum-frequency excitation of coherent magnons

Cited by in corpus (14)

• Impulsive Fermi magnon-phonon resonance in antiferromagnetic $Co{F}_2$
• Effective rectification of THz electromagnetic fields in a ferrimagnetic iron garnet
• Time-domain study of coupled collective excitations in quantum materials
• Terahertz stimulated parametric downconversion of a magnon mode in an antiferromagnet
• Unlocking Quantum Control and Multi-Order Correlations via Terahertz Two-Dimensional Coherent Spectroscopy
• Amplitude mode in a multi-gap superconductor MgB${}_2$ investigated by terahertz two-dimensional coherent spectroscopy
• Role of material-dependent properties in THz field-derivative-torque-induced nonlinear magnetization dynamics
• Extracting Nonlinear Dynamical Response Functions from Time Evolution
• Laser-induced helicity and texture-dependent switching of nanoscale stochastic domains in a ferromagnetic film
• Gilbert damping in two-dimensional metallic anti-ferromagnets
• Nonclassical dynamics of Néel vector and magnetization accompanied by THz and high-harmonic radiation from ultrafast-light-driven NiO antiferromagnet insulator
• High-efficiency Pt${}_{75}$Au${}_{25}$-based spintronic terahertz emitters
• Soft-X-ray momentum microscopy of nonlinear magnon interactions below 100-nm wavelength
• Optically induced magnetic inertia and magnons from non-Markovian extension of the Landau-Lifshitz-Gilbert equation