Plasmonic physics of 2D crystalline materials

Abstract

Collective modes of doped two-dimensional crystalline materials, namely graphene, MoS${}_2$ and phosphorene, both monolayer and bilayer structures, are explored using the density functional theory simulations together with the random phase approximation. The many-body dielectric functions of the materials are calculated using an {\it ab initio} based model involving material-realistic physical properties. Having calculated the electron energy-loss, we calculate the collective modes of each material considering the in-phase and out-of-phase modes for bilayer structures. Furthermore, owing to many band structures and intreband transitions, we also find high-energy excitations in the systems. We explain that the material-specific dielectric function considering the polarizability of the crystalline material such as MoS${}_2$ are needed to obtain realistic plasmon dispersions. For each material studied here, we find different collective modes and describe their physical origins.

arXiv comment30 pages, 21 figures (Invited paper) Special issue on Plasmonics, Photonics and Optoelectronics on Two-Dimensional Materials

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Cited by in corpus (12)

• Optical absorption properties of few-layer phosphorene
• Quasiparticle band-gap renormalization in doped monolayer MoS${}_2$
• Intersubband plasmon excitations in doped carbon nanotubes
• Hyperbolic plasmon modes in tilted Dirac cone phases of borophene
• First Principle Study for Optical Properties of TMDC/Graphene Heterostructures
• Non-local quantum effects in plasmons of graphene superlattices
• Plasmon-phonon-polaritons in encapsulated phosphorene
• ${\sigma }_h$ symmetry and electron-phonon interaction in two-dimensional crystalline systems
• Many-body exchange-correlation effects in MoS${}_2$ monolayer: The key role of nonlocal dielectric screening
• Low-loss two-dimensional plasmon modes in antimonene
• LCAO-TDDFT-$k$-$\omega$: Spectroscopy in the Optical Limit
• Optical properties, plasmons, and orbital Skyrme textures in twisted TMDs