Intrinsic nonreciprocal bulk plasmons in noncentrosymmetric magnetic systems

Abstract

Nonreciprocal plasmonics enables one-way light propagation at the nanoscale and it is an essential building block for photonics applications. Here, we explore intrinsic nonreciprocity in bulk plasmon propagation based on underlying symmetries. We demonstrate that the interband, as well as the intraband bulk plasmon modes, follow asymmetric dispersion depending on the sign of the wavevector for systems with broken inversion and time-reversal symmetry. We show that the nonreciprocity in the interband plasmon dispersion is dictated by the quantum metric connection, which is a band geometric quantity. The intrinsic nonreciprocity in bulk intraband plasmon dispersion is dictated by the quantum metric dipole and a higher-order `Drude' weight-like term. We corroborate our findings via explicit numerical calculations for the two-dimensional Qi-Wu-Zhang model and demonstrate the existence of intrinsic nonreciprocal intraband and interband plasmon modes in moire systems such as twisted bilayer graphene.

14 pages, 6 figures

References in corpus (18)

• Highly confined low-loss plasmons in graphene-boron nitride heterostructures
• Layer Hall effect in a 2D topological Axion antiferromagnet
• Berry curvature dipole senses topological transition in a moiré superlattice
• Quantum Nanophotonics in Two-Dimensional Materials
• Chiral response of twisted bilayer graphene
• Quantum geometry induced second harmonic generation
• Quasi-flat plasmonic bands in twisted bilayer graphene
• Electron Energy-Loss Spectroscopy: A versatile tool for the investigations of plasmonic excitations
• Long-lived spin plasmons in a spin-polarized two-dimensional electron gas
• Nonlinear anomalous Hall effects probe topological phase-transitions in twisted double bilayer graphene
• Plasmon mass and Drude weight in strongly spin-orbit-coupled 2D electron gases
• Plasmon modes of a massive Dirac plasma, and their superlattices
• Strain-induced large injection current in twisted bilayer graphene
• Plasmonic nonreciprocity driven by band hybridization in moiré materials
• Quantum plasmonic non-reciprocity in parity-violating magnets
• Tunable interband and intraband plasmons in twisted double bilayer graphene
• Photonic Topological Transitions and Epsilon-Near-Zero Surface Plasmons in Type-II Dirac Semimetal NiTe${}_2$
• Nonreciprocal electron hydrodynamics under magnetic fields: applications to nonreciprocal surface magnetoplasmons

Cited by in corpus (5)

• Tunable moiré materials for probing Berry physics and topology
• Phonons in Electron Crystals with Berry Curvature
• Chirality probe of twisted bilayer graphene in the linear transport regime
• Large quantum nonreciprocity in plasmons dragged by drifting electrons
• Anomalous skew scattering of plasmons in a Dirac electron fluid