Edge Electron Gas

TL;DR

This paper introduces the concept of the edge electron gas as a more suitable model than the uniform electron gas for describing electronic behavior near edges in inhomogeneous systems.

Contribution

It proposes the edge electron gas as a new theoretical framework to better understand electronic edges in many-body systems.

Findings

Edge electron gas provides a more accurate description near edges.

Traditional uniform electron gas is inadequate for inhomogeneous regions.

The new concept improves density-based many-body theories.

Abstract

The uniform electron gas, the traditional starting point for density-based many-body theories of inhomogeneous systems, is inappropriate near electronic edges. In its place we put forward the appropriate concept of the edge electron gas.