Diamond Publications - Search Results

Search Again...

These results only include publications that have been reviewed and processed by Diamond Light Source. To also view papers that have not yet been processed click here.

You can use the folder icon under Actions to collate papers as required. You can then click on View Folder in the left-hand navigation to review and/or download your folder.

One item found (0 items not approved).

Instruments / Technical Area	Publication Details	Published	Actions
I09-Surface and Interface Structural Analysis	Toward functionalized ultrathin oxide films: the impact of surface apical oxygen Judith Gabel , Matthias Pickem , Philipp Scheiderer , Lenart Dudy , Berengar Leikert , Marius Fuchs , Martin Stübinger , Matthias Schmitt , Julia Kuespert , Giorgio Sangiovanni , Jan M. Tomczak , Karsten Held , Tien-Lin Lee , Ralph Claessen , Michael Sing Advanced Electronic Materials 102 DOI: 10.1002/aelm.202101006 Diamond Proposal Number(s): [23737, 25151] Open Access Show Abstract ▼ Abstract: Thin films of transition metal oxides open up a gateway to nanoscale electronic devices beyond silicon characterized by novel electronic functionalities. While such films are commonly prepared in an oxygen atmosphere, they are typically considered to be ideally terminated with the stoichiometric composition. Using the prototypical correlated metal SrVO3 as an example, it is demonstrated that this idealized description overlooks an essential ingredient: oxygen adsorbing at the surface apical sites. The oxygen adatoms, which are present even if the films are kept in an ultrahigh vacuum environment and not explicitly exposed to air, are shown to severely affect the intrinsic electronic structure of a transition metal oxide film. Their presence leads to the formation of an electronically dead surface layer but also alters the band filling and the electron correlations in the thin films. These findings highlight that it is important to take into account surface apical oxygen or—mutatis mutandis—the specific oxygen configuration imposed by a capping layer to predict the behavior of ultrathin films of transition metal oxides near the single unit-cell limit.	Dec 2021

Instruments / Technical Area

Publication Details

Published

Actions

I09-Surface and Interface Structural Analysis

Toward functionalized ultrathin oxide films: the impact of surface apical oxygen