Polarization induced by charged particles in real solids

TL;DR

This paper presents a first-principles approach to modeling the wake potential and density induced by charged particles in real crystalline solids, accounting for band structure and periodic potential effects.

Contribution

It introduces a linear-response formalism using the random-phase approximation to accurately describe wake effects in inhomogeneous solids with full band structure consideration.

Findings

Variations of wake effects along different channels in Al and Si are analyzed.

The impact of the crystalline potential on induced wake is characterized.

The method provides detailed insights into charge-induced responses in real solids.

Abstract

We report a first-principles description of the induced wake potential and density in real solids. The linear-response formalism is used to obtain the potential and density induced by an external charge penetrating through an inhomogeneous periodic system. The linear dynamical response of the system is evaluated in the random-phase approximation, by including the full band structure of the solid. The impact of the periodic crystalline potential is analyzed, and variations of the wake along different channels in Al and Si are investigated.