Coupling of acoustic phonon to a spin-orbit entangled pseudospin

Abstract

We consider coupling of acoustic phonon to pseudospins consisting of electronic spins locked to orbital angular momentum states. We show that a Berry phase term arises from projection onto the time-dependent lowest energy manifold. We examine consequences on the phonon modes, in particular mode splitting, induced chirality and Berry curvatures under an external magnetic field which Zeeman couples to the pseudospin.

arXiv comment11 pages, 1 figure

References in corpus (27)

• Phonons and related properties of extended systems from density-functional perturbation theory
• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Electron-phonon interactions from first principles
• Novel Jeff = 1/2 Mott State Induced by Relativistic Spin-Orbit Coupling in Sr2IrO4
• Light-induced gauge fields for ultracold atoms
• Majorana quantization and half-integer thermal quantum Hall effect in a Kitaev spin liquid
• Quantum spin Hall effect in a transition metal oxide Na2IrO3
• Unusual thermal Hall effect in a Kitaev spin liquid candidate $\alpha$-RuCl${}_3$
• Berry Curvature and Phonon Hall Effect
• Giant thermal Hall conductivity from neutral excitations in the pseudogap phase of cuprates
• Orbital magnetic moments of phonons
• Phonon thermal Hall effect in strontium titanate
• Spin-orbit-entangled electronic phases in 4$d$ and 5$d$ transition-metal compounds
• Giant effective magnetic fields from optically driven chiral phonons in 4$f$ paramagnets
• Evidence of a Phonon Hall Effect in the Kitaev Spin Liquid Candidate $\alpha$-RuCl${}_3$
• Large Thermal Hall Effect in $\alpha$-RuCl${}_3$: Evidence for Heat Transport by Kitaev-Heisenberg Paramagnons
• Berry curvature in magnon-phonon hybrid systems
• Thermal Hall conductivity in the cuprate Mott insulators Nd${}_2$CuO${}_4$ and Sr${}_2$CuO${}_2$Cl${}_2$
• Enhanced thermal Hall effect in nearly ferroelectric insulators
• Origin of the Phonon Hall Effect in Rare-Earth Garnets
• Berry phase of phonons and thermal Hall effect in nonmagnetic insulators
• Phonon dynamics in the Kitaev spin liquid
• Lattice dynamics with molecular Berry curvature: chiral optical phonons
• Frequency splitting of chiral phonons from broken time reversal symmetry in CrI${}_3$
• Magnon-phonon interactions enhance the gap at the Dirac point in the spin-wave spectra of CrI${}_3$ two-dimensional magnets
• Intrinsic vibrational angular momentum from non-adiabatic effects in non-collinear magnetic molecules
• Sizeable suppression of thermal Hall effect upon isotopic substitution in strontium titanate

Cited by in corpus (1)

• Quantum Spin Liquid phases in Kitaev Materials