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Publications in Scientific Journals:

I. Sokolovic, M. Schmid, U. Diebold, M. Setvin:
"Incipient ferroelectricity: A route towards bulk-terminated SrTiO3";
Physical Review Materials, 3 (2019), 0344071 - 0344075.



English abstract:
An investigation of bulk-terminated (001) surfaces of SrTiO3, a prototypical cubic perovskite, was madepossible with a novel cleaving procedure. Controlled application of strain on a SrTiO3single-crystal resultsin a flat cleavage withμm-size domains of SrO and TiO2. Distribution of these two terminations is dictated byferroelectric domains induced by strain during the cleavage process. Atomically resolved scanning tunnelingmicroscopy/atomic force microscopy measurements reveal the presence of point defects in a well-definedconcentration of (142)%; Sr vacancies form at the SrO termination and complementary Sr adatoms appearat the TiO2termination. These intrinsic defects stabilize the surface by balancing the interplay betweenferroelectricity, surface polarity, and surface charge.


"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1103/PhysRevMaterials.3.034407


Created from the Publication Database of the Vienna University of Technology.