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In Situ Control of Separate Electronic Phases on SrTiO 3 Surfaces by Oxygen Dosing

DOI: 10.1002/adma.201600046 DOI Help

Authors: Lenart Dudy (University of Wuerzburg) , Michael Sing (University of Wuerzburg) , Philipp Scheiderer (University of Wuerzburg) , Jonathan D. Denlinger (Advanced Light Source) , Philipp Schütz (Universität Würzburg) , Judith Gabel (University of Wuerzburg) , Mathias Buchwald (Universität Würzburg) , Christoph Schlueter (Diamond Light Source) , Tien-lin Lee (Diamond Light Source) , Ralph Claessen (University of Wuerzburg)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Advanced Materials , VOL 28 , PAGES 7443 - 7449

State: Published (Approved)
Published: September 2016

Abstract: Insulating SrTiO3 (STO) can host 2D electron systems (2DESs) on its surfaces, caused by oxygen defects. This study shows that the STO surface exhibits phase separation once the 2DES is formed and relates this inhomogeneity to recently reported magnetic order at STO surfaces and interfaces. The results open pathways to exploit oxygen defects for engineering the electronic and magnetic properties of oxides.

Journal Keywords: functional oxides; heterostructures; oxide; oxygen control; phase separation; transition metal oxides

Subject Areas: Materials, Physics

Facility: Advanced Light Source