Optical properties, plasmons, and orbital Skyrme textures in twisted TMDs

Abstract

In the long-wavelength limit, Bloch-band Berry curvature has no effect on the bulk plasmons of a two-dimensional electron system. In this Letter we show instead that bulk plasmons are a probe of real-space topology. In particular, we focus on orbital Skyrme textures in twisted transition metal dichalcogenides, presenting detailed semiclassical and quantum mechanical calculations of the optical conductivity and plasmon spectrum of twisted ${\mathrm{MoTe}}_2$.

12 pages, 3 figures + Supplemental Material

References in corpus (21)

• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Spontaneous Skyrmion Ground States in Magnetic Metals
• First Principles Calculation of Anomalous Hall Conductivity in Ferromagnetic bcc Fe
• Sub-diffractional, volume-confined polaritons in a natural hyperbolic material: hexagonal boron nitride
• Time Reversal Polarization and a Z_2 Adiabatic Spin Pump
• Signatures of Fractional Quantum Anomalous Hall States in Twisted MoTe2 Bilayer
• Observation of Fractionally Quantized Anomalous Hall Effect
• Integer and fractional Chern insulators in twisted bilayer MoTe2
• Fractional Chern Insulator in Twisted Bilayer MoTe${}_2$
• Superconductivity in twisted bilayer WSe${}_2$
• Fractional quantum anomalous Hall states in twisted bilayer MoTe${}_2$ and WSe${}_2$
• Orbital Hall effect as an alternative to valley Hall effect in gapped graphene
• Magic Angles and Fractional Chern Insulators in Twisted Homobilayer TMDs
• Quasi-flat plasmonic bands in twisted bilayer graphene
• Optical and plasmonic properties of twisted bilayer graphene: Impact of interlayer tunneling asymmetry and ground-state charge inhomogeneity
• Non-Abelian fractionalization in topological minibands
• Adiabatic Approximation and Aharonov-Casher Bands in Twisted Homobilayer TMDs
• Giant proximity exchange and flat Chern band in 2D magnet-semiconductor heterostructures
• Plasmon-magnon interactions in two-dimensional honeycomb magnets
• Tunable interband and intraband plasmons in twisted double bilayer graphene
• Intraband collective excitations in fractional Chern insulators are dark

Cited by in corpus (4)

• Roadmap for Photonics with 2D Materials
• Giant chirality-induced spin polarization in twisted transition metal dichalcogenides
• Moiré Band Engineering in Twisted Trilayer WSe2
• Ultrafast dynamics of quantum matter driven by time-energy entangled photons