Type:
Journal
Description:
The Airy gas, which is the simplest edge electron gas, became an important model system for the exchange-correlation and kinetic energy functional development of the ground-state density functional theory. In this work, we compute the random phase approximation (RPA) and the adiabatic local density approximation (ALDA) Airy-gas density response functions, using the exact one-particle orbitals and eigenvalues. From the dynamical response function, we study several properties of the Airy-gas model, such as the Airy loss-function, the induced density, the Airy-plasmon full width at half maximum, the screened interaction, and the stopping power, providing a systematic study of these properties with respect to the slope of the effective linear potential that can be considered the main variable of any metal surface. For instance, using the peaks of the loss function, we extract the Airy-gas plasmon energy dispersion, and we …
Publisher:
American Physical Society
Publication date:
1 Oct 2024
Biblio References:
Volume: 110 Issue: 4 Pages: 043501
Origin:
Physical Review A