Coupling of plasmons to the two-magnon continuum in antiferromagnets
arXiv:2501.12873 · doi:10.1103/2mml-3bbv
Abstract
The coupling of magnons and plasmons offers a promising avenue for hybrid quantum systems, facilitating coherent energy and information transfer between magnetic and charge excitations. However, existing mechanisms often depend on spin-orbit coupling or temperature-activated processes, limiting their robustness for low-temperature quantum technologies. Here, we propose a coupling mechanism between plasmons and the two-magnon continuum in antiferromagnetic insulators, which operates at zero temperature and does not require spin-orbit coupling. Using a model system consisting of a two-dimensional electron gas on an insulating antiferromagnetic substrate, we show that the electric field of the plasmons interacts with the magnetically mediated electric polarization in the antiferromagnet, arising from bonds with broken inversion symmetry. This interaction enables a strong coupling to the spin-conserving two-magnon continuum, allowing for efficient hybridization and reaching the ultrastrong coupling regime.
arXiv comment12 pages, 7 figures
References in corpus (38)
- Antiferromagnetic spintronics
- Dielectric function, screening, and plasmons in 2D graphene
- Ultrastrong coupling between light and matter
- Dynamical polarization of graphene at finite doping
- Altermagnetism: spin-momentum locked phase protected by non-relativistic symmetries
- High cooperativity in coupled microwave resonator ferrimagnetic insulator hybrids
- Quantum technologies with hybrid systems
- Quantum magnonics: when magnon spintronics meets quantum information science
- Possible evidence for electromagnons in multiferroic manganites
- Ferroelectricity in the Magnetic E-Phase of Orthorhombic Perovskites
- Cavity Magnonics
- Plasmons in graphene: Recent progress and applications
- Hybrid magnonics: physics, circuits and applications for coherent information processing
- Spontaneous Magnon Decays
- Dynamical magneto-electric coupling in helical magnets
- Spin-waves in triangular lattice antiferromagnet: decays, spectrum renormalization, and singularities
- Electromagnons in multiferroic YMn2O5 and TbMn2O5
- Thermo-Plasma Polariton within Scaling Theory of Single-Layer Graphene
- Two-dimensional altermagnets: Superconductivity in a minimal microscopic model
- Chiral-Split Magnon in Altermagnetic MnTe
- Collective excitations of Dirac electrons in a graphene layer with spin-orbit interaction
- Microscopic theory of temperature-dependent magnetoelectric effect in Cr2O3
- Intrinsic lifetime of Dirac plasmons in graphene
- Charged Magnons in NaV2O5
- Strong quantum interactions prevent quasiparticle decay
- Lifetimes of antiferromagnetic magnons in two and three dimensions: experiment, theory, and numerics
- Laser-driven quantum magnonics and THz dynamics of the order parameter in antiferromagnets
- Topological magnon amplification
- Strongly coupled magnon-plasmon polaritons in graphene- 2D ferromagnet heterostructures
- Quantization of graphene plasmons
- Magnon-Plasmon Hybridization Mediated by Spin-Orbit Interaction in Magnetic Materials
- Spin-orbit coupling and electronic charge effects in Mott insulators
- Plasmon-magnon interactions in two-dimensional honeycomb magnets
- Theory of electronic magnetoelectric coupling in Mott insulators
- Topological spin-plasma waves
- Effect of moiré superlattice reconstruction in the electronic excitation spectrum of graphene-metal heterostructures
- Optical excitation of magnons in an easy-plane antiferromagnet: Application to SrIrO
- Cavity-Enhanced Optical Manipulation of Antiferromagnetic Magnon-Pairs