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

Manipulating the orbital state in a strongly correlated electron system is offundamental and technological importance for exploring and developing novelelectronic phases. Here, we report an unambiguous demonstration of orbitaloccupancy control between t2g and eg multiplets in quasi-twodimensionaltransition metal oxide superlattices (SLs) composed of a Mott insulator LaCoO3and a band insulator LaAlO3. As the LaCoO3 sublayer thickness approaches itsfundamental limit (i.e. one unit-cell-thick), the electronic state of the SLschanged from a Mott insulator, in which both t2g and eg orbitals are partiallyfilled, to a band insulator by completely filling (emptying) the t2g (eg)orbitals. We found the reduction of dimensionality has a profound effect on theelectronic structure evolution, which is, whereas, insensitive to the epitaxialstrain. The remarkable orbital controllability shown here offers a promisingpathway for novel applications such as catalysis and photovoltaics, where theenergy of d level is an essential parameter.

Dimensionality Control of d-orbital Occupation in Oxide Superlattices