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Structure of singly terminated polar DyScO 3 (110) surfaces

Publication Type

Journal Article

Authors

Kleibeuker, J.E., B. Kuiper, S. Harkema, D.H.A. Blank, G. Koster, G. Rijnders, P. Tinnemans, E. Vlieg, P.B. Rossen, W. Siemons, G. Portale, J. Ravichandran, J.M. Szepieniec, Ramamoorthy Ramesh

DOI

10.1103/PhysRevB.85.165413

Abstract

We have studied the polar surface of singly terminated DyScO 3 (110) crystals by reflective high-energy electron diffraction, surface x-ray diffraction and angle-resolved mass spectroscopy of recoiled ions. These techniques show that the surfaces are (1 × 1) reconstructed, which points to the absence of ordered cation vacancies at the surface. The best surfaces were obtained after a selective chemical wet etch. We suggest that for ScO 2 terminated surfaces, adsorbates, or oxygen vacancies are most likely to occur in order to overcome the polarity difference between stoichiometric bulk crystal and vacuum. © 2012 American Physical Society.

Journal

Physical Review B - Condensed Matter and Materials Physics

Volume

Year of Publication

2012

ISSN

10980121

Research Areas

Ramesh Lab