Tailoring High-Frequency Magnonics in Monolayer Chromium Trihalides

Abstract

Monolayer chromium trihalides, the archetypal two dimensional (2D) magnetic materials, are readily suggested as a promising platform for high frequency magnonics. Here we detail the spin wave properties of monolayer CrBr${}_3$ and CrI${}_3$, using spin dynamics simulations parametrized from the first principles. We reveal that spin wave dispersion can be tuned in a broad range of frequencies by strain, paving the way towards flexo magnonic applications. We further show that ever present halide vacancies in these monolayers host sufficiently strong Dzyaloshinskii Moriya interaction to scatter spin waves, which promotes design of spin-wave guides by defect engineering. Finally we discuss the spectra of spin-waves propagating across a moiré periodic modulation of magnetic parameters in a van der Waals heterobilayer, and show that the nanoscale moiré periodicities in such samples are ideal for realization of a magnonic crystal in the terahertz frequency range. Recalling the additional tunability of magnetic 2D materials by electronic gating, our results situate these systems among the front-runners for prospective high frequency magnonic applications.

References in corpus (35)

• Electrical Control of 2D Magnetism in Bilayer CrI3
• Local strain engineering in atomically thin MoS2
• Controlling magnetism in 2D CrI3 by electrostatic doping
• Probing magnetism in 2D van der Waals crystalline insulators via electron tunneling
• Stacking-Dependent Magnetism in Bilayer CrI${}_3$
• On the origin of magnetic anisotropy in two dimensional CrI${}_3$
• Direct observation of van der Waals stacking dependent interlayer magnetism
• Magnonic crystals for data processing
• Graphene bubbles on a substrate : Universal shape and van der Waals pressure
• Interplay between Kitaev interaction and single ion anisotropy in ferromagnetic CrI${}_3$ and CrGeTe${}_3$ monolayers
• Topological spin excitations in honeycomb ferromagnet CrI${}_3$
• Skyrmions in the moiré of van der Waals 2D magnets
• Strong modulation of optical properties in black phosphorus through strain-engineered rippling
• Magnetic Skyrmion State in Janus Monolayers of Chromium Trihalides Cr(I,X)3
• Large spin-orbit splitting of deep in-gap defect states of engineered sulfur vacancies in monolayer WS2
• Spirit: Multifunctional Framework for Atomistic Spin Simulations
• Evidence of Flat Bands and Correlated States in Buckled Graphene Superlattices
• Direct observation of 2D magnons in atomically thin CrI${}_3$
• Proximity exchange effects in MoSe${}_2$ and WSe${}_2$ heterostructures with CrI${}_3$: twist angle, layer, and gate dependence
• Two-dimensional Ferromagnetic van der Waals CrX3 (X=Cl, Br, I) Monolayers with Enhanced Anisotropy and Curie Temperature
• Micromagnetometry of two-dimensional ferromagnets
• Raman fingerprint of two terahertz spin wave branches in a two-dimensional honeycomb Ising ferromagnet
• Meron-Like Topological Spin Defects in Monolayer CrCl3
• First-principles theory of proximity spin-orbit torque on a two-dimensional magnet: Current-driven antiferromagnet-to-ferromagnet reversible transition in bilayer CrI${}_3$
• High throughput computational screening for 2D ferromagnetic materials: the critical role of anisotropy and local correlations
• Gate-Defined Josephson Junctions in Magic-Angle Twisted Bilayer Graphene
• Magnetic Skyrmions in Atomic Thin CrI${}_3$ Monolayer
• Ab initio methodology for magnetic exchange parameters: \\Generic four-state energy mapping on Heisenberg spin Hamiltonian
• Magnetization textures in twisted bilayer 2D CrX${}_3$ (X=Br, I)
• Distinctive magnetic properties of CrI3 and CrBr3 monolayers caused by spin-orbit coupling
• Strain and electric-field control of spin-spin interactions in monolayer CrI${}_3$
• Microwave excitation of spin wave beams in thin ferromagnetic films
• Probing the Dzyaloshinskii-Moriya interaction via the propagation of spin waves in ferromagnetic thin films
• Tunable Snell's law for spin waves in heterochiral magnetic films
• Releasing latent chirality in magnetic two-dimensional materials

Cited by in corpus (3)

• Stacking-dependent topological magnons in bilayer CrI${}_3$
• Tunable magnon topology in monolayer CrI${}_3$ under external stimuli
• Strain-tunable magnetic and magnonic states in Ni-dihalide monolayers