Density domains of a photo-excited electron gas on liquid helium

TL;DR

This paper investigates how Coulomb interactions influence the formation of density domains in a photo-excited electron gas on liquid helium, explaining recent experimental observations and the suppression of negative conductivity regions.

Contribution

It reveals the role of Coulomb effects in creating density domains, providing a new understanding of the stability and conductivity behavior of the electron gas.

Findings

Density domains form due to Coulomb effects.

Domains reduce regions with negative conductivity.

Analysis explains recent experimental phenomena.

Abstract

The Coulombic effect on the stability range of the photo-excited electron gas on liquid helium is shown to favor formation of domains of different densities. Domains appear to eliminate or greatly reduce regions with negative conductivity. An analysis of the density domain structure allows explaining remarkable observations reported recently for the photo-excited electron gas.