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

Surfaces and interfaces offer new possibilities for tailoring the many-bodyinteractions that dominate the electrical and thermal properties of transitionmetal oxides. Here, we use the prototypical two-dimensional electron liquid(2DEL) at the SrTiO$_3$(001) surface to reveal a remarkably complex evolutionof electron-phonon coupling with the tunable carrier density of this system. Atlow density, where superconductivity is found in the analogous 2DEL at theLaAlO$_3$/SrTiO$_3$ interface, our angle-resolved photoemission data showreplica bands separated by 100\,meV from the main bands. This is a hallmark ofa coherent polaronic liquid and implies strong long-range coupling to a singlelongitudinal optical phonon mode. In the overdoped regime the preferentialcoupling to this mode decreases and the 2DEL undergoes a crossover to a moreconventional metallic state with weaker short-range electron-phononinteraction. These results place constraints on the theoretical description ofsuperconductivity and allow for a unified understanding of the transportproperties in SrTiO$_3$-based 2DELs.

Tailoring the nature and strength of electron-phonon interactions in the SrTiO$_3$(001) two-dimensional electron liquid