Measurement of the dynamic charge response of materials using low-energy, momentum-resolved electron energy-loss spectroscopy (M-EELS)

Sean Vig, Anshul Kogar, Matteo Mitrano +9

One of the most fundamental properties of an interacting electron system is its frequency- and wave-vector-dependent density response function, $\chi (\mathbf{q},\omega )$. The imaginary part,…