Energy loss of charged particles in a two-dimensional Dirac plasma

TL;DR

This paper investigates how charged particles lose energy when passing through a 2D Dirac plasma, like graphene, using theoretical models based on dielectric response and RPA.

Contribution

It provides a theoretical analysis of energy loss mechanisms in graphene-like systems using dielectric response functions within RPA.

Findings

Quantifies energy loss rates of charged particles in 2D Dirac systems.

Analyzes the dielectric response of graphene-like materials.

Provides insights into particle interactions in Dirac plasmas.

Abstract

The stopping power and energy loss rate of charged particles traversing a two-dimensional Dirac plasma is investigated. The Dirac plasma considered here models a solid state system, recently realized graphene monolayer, where the conduction electrons obey the Dirac-like equation and exhibit a linear in momentum dispersion relation. Theoretical work presented here is based on the the dielectric response function and the dynamical structure function within the Random-Phase-Approximation (RPA).