The T-Matrix method in electron energy loss and cathodoluminescence spectroscopy calculations for metallic nano-particles

In this paper, we present the application of the T-Matrix method (TMM) for the calculation of Electron Energy Loss Spectra (EELS), cathodoluminescence spectra (CLS) and far-field patterns produced by metallic nano-particles. Being frequently used in electromagnetic scattering calculations, the TMM provides an efficient tool for EELS calculations as well and can be employed, e.g. for the investigation of nano-antennas.

► The T-Matrix method is employed for the simulation of EELS experiments. ► Results for a nano-gold spheroid and a sphere dimer are calculated. ► The far-field patterns of the electron-excited plasmonic particles are calculated. ► The dimer far-field shows a directivity making it a simple Yagi–Uda nano-antenna.