Accessing phonon polaritons in hyperbolic crystals by ARPES

Abstract

Recently studied hyperbolic materials host unique phonon-polariton (PP) modes. The ultra-short wavelengths of these modes, which can be much smaller than those of conventional exciton-polaritons, are of high interest for extreme sub-diffraction nanophotonics schemes. Polar hyperbolic materials such as hexagonal boron nitride can be used to realize strong long-range coupling between PP modes and extraneous charge degrees of freedom. The latter, in turn, can be used to control and probe PP modes. Of special interest is coupling between PP modes and plasmons in an adjacent graphene sheet, which opens the door to accessing PP modes by angle-resolved photoemission spectroscopy (ARPES). A rich structure in the graphene ARPES spectrum due to PP modes is predicted, providing a new probe of PP modes and their coupling to graphene plasmons.

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Cited by in corpus (22)

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• Probing low-energy hyperbolic polaritons in van der Waals crystals with an electron microscope
• Phonon polaritonics in two-dimensional materials
• Current-induced birefringent absorption and non-reciprocal plasmons in graphene
• Optical and plasmonic properties of twisted bilayer graphene: Impact of interlayer tunneling asymmetry and ground-state charge inhomogeneity
• Super-Planckian electron cooling in a van der Waals stack
• Confining graphene plasmons to the ultimate limit
• Shaping Polaritons to Reshape Selection Rules
• Acoustically-driven surface and hyperbolic plasmon-phonon polaritons in graphene/h-BN heterostructures on piezoelectric substrates
• Acoustic plasmons at the crossover between the collisionless and hydrodynamic regimes in two-dimensional electron liquids
• Resonant tunneling and the quasiparticle lifetime in graphene/boron nitride/graphene heterostructures
• Lippmann-Schwinger theory for two-dimensional plasmon scattering
• Electrical plasmon injection in double-layer graphene heterostructures
• Tuning Fermi Liquids with polaritonic Cavities
• Theory of intrinsic acoustic plasmons in twisted bilayer graphene
• Plasmon-phonon-polaritons in encapsulated phosphorene
• Quantum Electrodynamics of graphene Landau levels in a deep-subwavelength hyperbolic phonon polariton cavity
• Optical properties, plasmons, and orbital Skyrme textures in twisted TMDs
• A near-unity efficiency source of entangled guided waves
• Electrical generation of surface plasmon polaritons in plasmonic heterostructures