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.

References in corpus (5)

• Electronic properties of molecular solids: the peculiar case of solid Picene
• Momentum dependence of the excitons in pentacene
• Exciton character in picene molecular solids
• Dynamic response and electronic structure of potassium doped picene investigated by electron energy-loss spectroscopy
• Challenging the nature of low energy plasmon excitations in CaC${}_6$ using electron energy-loss spectroscopy

Cited by in corpus (6)

• Direct Observation of the Lowest Indirect Exciton State in the Bulk of Hexagonal Boron Nitride
• Investigation of the dispersion and the effective masses of excitons in bulk 2H-MoS2 using transition electron energy-loss spectroscopy
• Investigation of potassium-intercalated bulk MoS${}_2$ using transmission electron energy-loss spectroscopy
• 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