Electron Energy-Loss Spectroscopy: A versatile tool for the investigations of plasmonic excitations

Abstract

The inelastic scattering of electrons is one route to study the vibrational and electronic properties of materials. Such experiments, also called electron energy-loss spectroscopy, are particularly useful for the investigation of the collective excitations in metals, the charge carrier plasmons. These plasmons are characterized by a specific dispersion (energy-momentum relationship), which contains information on the sometimes complex nature of the conduction electrons in topical materials. In this review we highlight the improvements of the electron energy-loss spectrometer in the last years, summarize current possibilities with this technique, and give examples where the investigation of the plasmon dispersion allows insight into the interplay of the conduction electrons with other degrees of freedom.

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Cited by in corpus (29)

• Position and momentum mapping of vibrations in graphene nanostructures in the electron microscope
• J${}_{eff}$ description of the honeycomb Mott insulator $\alpha$-RuCl${}_3$
• Doping evolution of the charge excitations and electron correlations in electron-doped superconducting La${}_{2-x}$Ce${}_x$CuO${}_4$
• Direct Observation of the Lowest Indirect Exciton State in the Bulk of Hexagonal Boron Nitride
• Acoustic plasmons and conducting carriers in hole-doped cuprate superconductors
• Valley Plasmonics in the Dichalcogenides
• Investigation of the dispersion and the effective masses of excitons in bulk 2H-MoS2 using transition electron energy-loss spectroscopy
• Directional detection of dark matter with anisotropic response functions
• Emergent Behavior in Strongly Correlated Electron Systems
• Tunable interband and intraband plasmons in twisted double bilayer graphene
• Non-Generic Dispersion of Excitons in the Bulk of WSe${}_2$
• Potassium-intercalated bulk HfS${}_2$ and HfSe${}_2$: Phase stability, structure, and electronic structure
• Electron-energy-loss and time-dependent density functional theory study on the plasmon dispersion in 2H-NbS2
• Low temperature enhancement of ferromagnetic Kitaev correlations in α-RuCl3
• Intrinsic nonreciprocal bulk plasmons in noncentrosymmetric magnetic systems
• Semiconductor-to-Metal Transition in the Bulk of WSe2 upon Potassium Intercalation
• Dynamic structure function of some singular Fermi-liquids
• Mapping of the energetically lowest exciton in bulk $1T$-HfS${}_2$
• Low energy exciton pocket at finite momentum in tetracene molecular solids
• Investigation of potassium-intercalated bulk MoS${}_2$ using transmission electron energy-loss spectroscopy
• Unusual Low-Energy Collective Charge Excitations in High-$T_c$ Cuprate Superconductors
• Electronic properties of Mn-Phthalocyanine - C${}_{60}$ bulk heterojunctions: combining photoemission and electron energy-loss spectroscopy
• Investigation of indirect excitons in bulk $2H$-MoS${}_2$ using transmission electron energy-loss spectroscopy
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• Nanoscale and Element-Specific Lattice Temperature Measurements using Core-Loss Electron Energy-Loss Spectroscopy
• Propagating charge carrier plasmon in Sr2RuO4
• Superconductivity-Induced Changes in Density-Density Correlation Function Enabled by Umklapp Processes
• Electronic excitation spectrum of doped organic thin films investigated using electron energy-loss spectroscopy
• Collective plasmonic modes in the chiral multifold fermionic material CoSi