Chiral Phonons with Giant Magnetic Moments in a Topological Crystalline Insulator

Abstract

We have studied the magnetic response of transverse optical phonons in Pb${}_{1-x}$Sn${}_x$Te films. Polarization-dependent terahertz magnetospectroscopy measurements revealed Zeeman splittings and diamagnetic shifts, demonstrating that these phonon modes become chiral in magnetic fields. Films in the topological crystalline insulator phase ($x>0.32$) exhibited magnetic moment values that are larger than those for topologically trivial films ($x<0.32$) by two orders of magnitude. Furthermore, the sign of the effective $g$-factor was opposite in the two phases, which can be explained by our theoretical model. These results strongly indicate the existence of interplay between the magnetic properties of chiral phonons and the topology of electronic band structure.

arXiv comment6 pages, 3 figures, see Supplemental Material in the Ancillary directory

References in corpus (45)

• Topological Crystalline Insulators in the SnTe Material Class
• Experimental realization of a topological crystalline insulator in SnTe
• Giant Anharmonic Phonon Scattering in PbTe
• A topological crystalline insulator (TCI) phase via topological phase transition and crystalline mirror symmetry
• Valley contrasting chiral phonons in monolayer hexagonal lattices
• Angular Momentum of Phonons and Einstein-de Haas Effect
• Surface States of Topological Crystalline Insulators in IV-VI Semiconductors
• Dynamical Multiferroicity
• Phonons become chiral in the pseudogap phase of cuprates
• Truly chiral phonons in α-HgS
• Model for Topological Phononics and Phonon Diode
• Phonon self-energy and origin of anomalous neutron scattering spectra in SnTe and PbTe thermoelectrics
• Orbital magnetic moments of phonons
• Pseudospins and topological effects of phonons in a Kekule lattice
• Terahertz electric-field driven dynamical multiferroicity in SrTiO${}_3$
• Large effective magnetic fields from chiral phonons in rare-earth halides
• Giant effective magnetic fields from optically driven chiral phonons in 4$f$ paramagnets
• The topological-crystalline-insulator (Pb,Sn)Te - surface states and their spin-polarization
• A Large Effective Phonon Magnetic Moment in a Dirac Semimetal
• Anharmonic phonon spectra of PbTe and SnTe in the self-consistent harmonic approximation
• Phonon Magnetic Moment from Electronic Topological Magnetization
• Electron-phonon scattering and thermoelectric transport in $p$-type PbTe from first principles
• Dynamically induced magnetism in KTaO${}_3$
• Chiral phonons: circularly polarized Raman spectroscopy and $\text{ab initio}$ calculations in a chiral crystal tellurium
• Single-Shot Terahertz Time-Domain Spectroscopy in Pulsed High Magnetic Fields
• Computation of topological phase diagram of disordered Pb${}_{1-x}$Sn${}_x$Te using the kernel polynomial method
• Difference between angular momentum and pseudoangular momentum
• Soft phonons and ultralow lattice thermal conductivity in the Dirac semimetal Cd3As2
• Topological semimetals in the SnTe material class: Nodal lines and Weyl points
• An Inelastic X-Ray investigation of the Ferroelectric Transition in SnTe
• Electron magnetic moment of transient chiral phonons in KTaO${}_3$
• Frequency splitting of chiral phonons from broken time reversal symmetry in CrI${}_3$
• Time-Domain Terahertz Spectroscopy in High Magnetic Fields
• SU(3) Quantum Hall Ferromagnetism in SnTe
• $(111)$ surface states of SnTe
• Gate-tunable phonon magnetic moment in bilayer graphene
• Dynamic electron-phonon and spin-phonon interactions due to inertia
• Magnetoterahertz Response and Faraday Rotation from Massive Dirac Fermions in the Topological Crystalline Insulator Pb${}_{0.5}$Sn${}_{0.5}$Te
• Copropagating edge states produced by the interaction between electrons and chiral phonons in two-dimensional materials
• Terahertz Faraday and Kerr rotation spectroscopy of Bi${}_{1-x}$Sb${}_x$ films in high magnetic fields up to 30 Tesla
• Chiral-phonon-induced current in helical crystals
• Chiral phonons as dark matter detectors
• Changes of Fermi Surface Topology due to the Rhombohedral Distortion in SnTe
• Topological quantum transition driven by charge-phonon coupling in higher-order topological insulators
• Anharmonic coupling between electrons and TO phonons in the vicinity of ferroelectric quantum critical point

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• Terahertz electric-field driven dynamical multiferroicity in SrTiO${}_3$
• Giant effective magnetic moments of chiral phonons from orbit-lattice coupling
• Magnetic order induced chiral phonons in a ferromagnetic Weyl semimetal
• Weyl Phonons: The connection of topology and chirality
• Phonon Inverse Faraday effect from electron-phonon coupling
• Electric field-induced nonreciprocal spin current due to chiral phonons in chiral-structure superconductors
• Exciton-activated effective phonon magnetic moment in monolayer MoS2
• Magnetic switching of phonon angular momentum in a ferrimagnetic insulator
• Theory of spin magnetization driven by chiral phonons
• Shaping terahertz waves using anisotropic shear modes in a van der Waals mineral
• Chiral phonons induced from spin dynamics via magnetoelastic anisotropy
• Terahertz high-harmonic generation in gapped antiferromagnetic chains
• Windowing in terahertz time-domain spectroscopy: resolving resonances in thin-film samples
• Gauge theory of giant phonon magnetic moment in doped Dirac semimetals
• Chiral magnon-polaron edge states in Heisenberg-Kitaev magnets
• Phonon Edelstein effect in chiral metals
• Simple THz phase retarder based on Mach-Zehnder interferometer for polarization control
• Spin-spin interaction mediated by chiral phonons
• Magnetic Signature of Chiral Phonons Revealed by Neutron Spectroscopy in Ferrimagnetic Fe${}_{1.75}$Zn${}_{0.25}$Mo${}_3$O${}_8$
• Symmetry-guided catalogue of chiral phonon materials
• Cavity-assisted magnetization switching in a quantum spin-phonon chain
• Metallicity-driven polar transitions in topological epilayers
• Anomalous phonon magnetic moments
• Lattice excitations with finite polarization and magnetization
• Optimizing Aperture Geometry in THz-TDS for Accurate Spectroscopy of Quantum Materials
• General ab initio framework for electronic-order-induced lattice-dynamics symmetry breaking
• Supercurrent-induced phonon angular momentum
• Nonlocality and Strength of Interatomic Interactions Inducing the Topological Phonon Phase Transition
• $SU(N)$ spin-phonon simulations of Floquet dynamics in spin $S>1/2$ Mott insulators
• Raman spectroscopy of van der Waals topological magnet GdGaI
• Pseudo-chiral phonon splitting from octupolar magnetic order