English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Fundamental interest for 2D electron gas (2DEG) systems has been recentlyrenewed with the advent of 2D materials and their potential high-impactapplications in optoelectronics. Here, we investigate a 2DEG created by theelectron transfer from a Ag adatom gas deposited on aSi(111)$\sqrt{3}\times\sqrt{3}$-Ag surface to an electronic surface state.Using low-energy electron microscopy (LEEM), we measure the Ag adatom gasconcentration and the 2DEG-induced charge transfer. We demonstrate a lineardependence of the surface work function change on the Ag adatom gasconcentration. A breakdown of the linear relationship is induced by theoccurrence of the Ag adatom gas superstructure identified asSi(111)$\sqrt{21}\times\sqrt{21}$-Ag only observed below room temperature. Weevidence below room temperature a confinement of the 2DEG on atomic terracescharacterised by spatial inhomogeneities of the 2DEG-induced charge transferalong with temporal fluctuations. These variations mirror the Ag adatom gasconcentration changes induced by the growth of 3D Ag islands and the occurrenceof an Ehrlich-Schwoebel diffusion barrier of 155$\pm$10meV.

Spatial inhomogeneity and temporal dynamics of a 2D electron gas in interaction with a 2D adatom gas