Magnon-induced phononic Chern insulator

• URL: http://arxiv.org/abs/2608.27011v1
• Date: Thu, 27 Aug 2026 11:55:52 GMT
• Title: Magnon-induced phononic Chern insulator
• Abstract summary: We propose a magnon-induced phononic Chern in a honeycomb phononic crystal hybridized with ferromagnetic islands at the hexagon centers.<n>A circularly polarized Kittel mode couples to the surrounding phonons with a phase winding, which breaks time-reversal symmetry and opens a full Chern gap.
• Score: 0.9218538486245059
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: High-frequency artificial phononic crystals offer a low-loss platform compatible with on-chip integration, yet realizing Chern phononic phases at GHz frequencies remains challenging. Here, we propose a magnon-induced phononic Chern insulator in a honeycomb phononic crystal hybridized with ferromagnetic islands at the hexagon centers. A circularly polarized Kittel mode couples to the surrounding phonons with a phase winding, which breaks time-reversal symmetry and opens a full Chern gap. In the large-detuning regime, this mechanism leads to an effective Haldane-type phononic model with magnon-induced complex hopping. By tuning the magnon-phonon interaction, the full hybrid system accesses Chern phases with tunable Chern numbers |C|=1 and |C|=2. The predicted gaps can exceed realistic phonon and magnon linewidths, enabling their observation in GHz acoustic devices. Our work establishes chiral magnon--phonon hybridization as a route to magnetically reconfigurable topological phononics.

Related papers

• Deep Strong light-matter Coupling in 3D Kane Fermions [32.505127447635864]
  Deep strong light-matter coupling represents an extreme non-perturbative regime of quantum electrodynamics.<n>We exploit the ultralow effective mass of Kane fermions to realise Landau polaritons in a bulk mercury cadmium telluride layer coupled to a Fabry-Perot resonator.<n>Despite the nonlinear Landau level structure of relativistic Kane fermions, we show that a diamagnetic $A2$ term naturally emerges and precludes a superradiant phase transition.
  arXiv  Detail & Related papers  (2026-04-30T15:54:18Z)
• Topological Magnon-Phonon Hybrid Bands in Ferromagnetic Skyrmion Crystals [0.0]
  We investigate magnon-phonon excitations in ferromagnetic skyrmion crystal (SkX) stabilized on a triangular spin lattice by Dzyaloshinskii-Moriya interaction (DMI)<n>Although the lowest two magnon bands of the bare SkX are topologically trivial, we show that coupling to lattice vibrations reconstructs the low-energy sector and generates topological MP hybrid bands.
  arXiv  Detail & Related papers  (2026-04-12T06:34:56Z)
• Time-Domain Two-Magnon Interference Enabled by a Tunable Beamsplitter [0.0]
  Two-magnon interference is supported by a tunable magnonic beamsplitter operation formed in a hybrid cavity magnonic system.<n>These findings suggest that two-magnon interference in hybrid cavity magnonic systems may enable novel quantum metrological devices to study fundamental magnon dynamics.
  arXiv  Detail & Related papers  (2026-02-14T03:15:03Z)
• Coupling Magnons to an Opto-Electronic Parametric Oscillator [6.408545559187285]
  We introduce a new, hybrid platform for investigating long-distance coupling and nonlinearity in coherent magnonic phenomena.<n>Our result lays out a new, hybrid platform for investigating long-distance coupling and nonlinearity in coherent magnonic phenomena.
  arXiv  Detail & Related papers  (2025-10-01T20:18:49Z)
• Chiral Phonons in Graphyne [1.8117028028306317]
  Chiral phonons offer new perspectives for phononic and quantum device engineering.<n>Chiral phonons in graphyne remain unexplored owing to the existence of inversion and time-reversal symmetries.
  arXiv  Detail & Related papers  (2025-08-14T19:57:57Z)
• Controllable Non-reciprocity in Multi-sphere Loaded Chiral Resonator [0.0]
  Controllable non-reciprocity in cavity magnonics could enable the development of programmable isolators, circulators, and RF switches with improved performance.<n>Developments could pave the way toward more versatile and scalable information processing systems.
  arXiv  Detail & Related papers  (2025-06-27T13:47:41Z)
• Raman-phonon-polariton condensation in a transversely pumped cavity [44.99833362998488]
  We suggest a new approach to realising phonon polaritons, by employing a transverse-pumping Raman scheme. We show that such a system may realise a phonon-polariton condensate.
  arXiv  Detail & Related papers  (2024-05-08T17:59:31Z)
• Ab-Initio Calculations of Nonlinear Susceptibility and Multi-Phonon Mixing Processes in a 2DEG-Piezoelectric Heterostructure [41.94295877935867]
  Solid-state elastic-wave phonons are a promising platform for a wide range of quantum information applications. We propose a general architecture using piezoelectric-semiconductor heterostructures. We show that, for this system, the strong third-order nonlinearity could enable single-phonon Kerr shift in an acoustic cavity.
  arXiv  Detail & Related papers  (2024-02-01T03:34:41Z)
• Quench dynamics in higher-dimensional Holstein models: Insights from Truncated Wigner Approaches [41.94295877935867]
  We study the melting of charge-density waves in a Holstein model after a sudden switch-on of the electronic hopping. A comparison with exact data obtained for a Holstein chain shows that a semiclassical treatment of both the electrons and phonons is required in order to correctly describe the phononic dynamics.
  arXiv  Detail & Related papers  (2023-12-19T16:14:01Z)
• A phononic crystal coupled to a transmission line via an artificial atom [36.136619420474766]
  We study a phononic crystal interacting with an artificial atom. A scattering spectrum of propagating electromagnetic waves on the artificial atom visualizes acoustic modes of the phononic crystal. Our geometry allows to realize effects of quantum acoustics on a simple and compact phononic crystal.
  arXiv  Detail & Related papers  (2023-09-14T13:51:07Z)
• Nearly-Resonant Crystalline-Phononic Coupling in Quantum Spin Liquid Candidate CsYbSe$_2$ [48.30279211143264]
  CsYbSe$$, a recently identified quantum spin liquid (QSL) candidate, exhibits strong crystal electric field excitations. We identify phonon and CEF modes with Raman spectroscopy and observe strong CEF-phonon mixing resulting in a vibronic bound state.
  arXiv  Detail & Related papers  (2021-11-06T17:00:34Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.