Frequency splitting of chiral phonons from broken time reversal symmetry in CrI${}_3$

Abstract

Conventional approaches for lattice dynamics based on static interatomic forces do not fully account for the effects of time-reversal-symmetry breaking in magnetic systems. Recent approaches to rectify this involve incorporating the first-order change in forces with atomic velocities under the assumption of adiabatic separation of electronic and nuclear degrees of freedom. In this work, we develop a first-principles method to calculate this velocity-force coupling in extended solids, and show via the example of ferromagnetic CrI${}_3$ that, due to the slow dynamics of the spins in the system, the assumption of adiabatic separation can result in large errors for splittings of zone-center chiral modes. We demonstrate that an accurate description of the lattice dynamics requires treating magnons and phonons on the same footing.

References in corpus (25)

• Phonons and related properties of extended systems from density-functional perturbation theory
• Electron-phonon interactions from first principles
• Robust Intrinsic Ferromagnetism and Half Semiconductivity in Stable Two-Dimensional Single-Layer Chromium Trihalides
• On the origin of magnetic anisotropy in two dimensional CrI${}_3$
• Strain-tunable magnetic anisotropy in monolayer CrCl${}_3$, CrBr${}_3$, and CrI${}_3$
• Angular Momentum of Phonons and Einstein-de Haas Effect
• Fundamental Spin Interactions Underlying the Magnetic Anisotropy in the Kitaev Ferromagnet CrI${}_3$
• Direct observation of 2D magnons in atomically thin CrI${}_3$
• Berry Curvature and Phonon Hall Effect
• Spin-phonon coupling effects in transition-metal perovskites:a DFT+$U$ and hybrid-functional study
• Giant thermal Hall conductivity from neutral excitations in the pseudogap phase of cuprates
• Phonon thermal Hall effect in strontium titanate
• Magnons in real materials from density-functional theory
• Giant effective magnetic fields from optically driven chiral phonons in 4$f$ paramagnets
• Anomalous Thermal Hall Effect in an Insulating van der Waals Magnet VI3
• Enhanced thermal Hall effect in nearly ferroelectric insulators
• Chiral Phonons in Chiral Materials
• Berry phase of phonons and thermal Hall effect in nonmagnetic insulators
• Electron correlation effects on exchange interactions and spin excitations in 2D van der Waals materials
• Distinctive magnetic properties of CrI3 and CrBr3 monolayers caused by spin-orbit coupling
• Large spin-phonon coupling and magnetically-induced phonon anisotropy in Sr$M$O${}_3$ perovskites ($M$=V,Cr,Mn,Fe,Co)
• Lattice dynamics with molecular Berry curvature: chiral optical phonons
• Quantum many-body dynamics of the Einstein-de Haas effect
• Maximally-localized Wannier Functions in Antiferromagnetic MnO within the FLAPW Formalism
• Intrinsic vibrational angular momentum from non-adiabatic effects in non-collinear magnetic molecules

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• Chirality-induced Phonon-Spin Conversion at an Interface
• Magnetic order induced chiral phonons in a ferromagnetic Weyl semimetal
• Adiabatic dynamics of coupled spins and phonons in magnetic insulators
• Classification of materials with phonon angular momentum and microscopic origin of angular momentum
• Thermal Hall effects due to topological spin fluctuations in YMnO${}_3$
• On-site and inter-site Hubbard corrections in magnetic monolayers: The case of FePS${}_3$ and CrI${}_3$
• Magnetic switching of phonon angular momentum in a ferrimagnetic insulator
• Chiral phonons induced from spin dynamics via magnetoelastic anisotropy
• Extrinsic Mechanisms of Phonon Magnetic Moment
• Comprehensive Study of Phonon Chirality under Symmetry Constraints
• Nonreciprocal phonons in PT-symmetric antiferromagnet
• Magnons from time-dependent density-functional perturbation theory and nonempirical Hubbard functionals
• Gauge theory of giant phonon magnetic moment in doped Dirac semimetals
• Dynamical response of noncollinear spin systems at constrained magnetic moments
• Dynamical Orbital Angular Momentum Induced by Circularly Polarized Phonons
• Coupling of acoustic phonon to a spin-orbit entangled pseudospin
• General ab initio framework for electronic-order-induced lattice-dynamics symmetry breaking
• Intrinsic thermal Hall effect of optical phonons enhanced by discrete rotational symmetry
• Pseudo-chiral phonon splitting from octupolar magnetic order