Journal
SURFACE SCIENCE
Volume 506, Issue 1-2, Pages 87-92Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0039-6028(01)01802-7
Keywords
insulating surfaces; ion scattering spectroscopy; single crystal surfaces; surface structure, morphology, roughness, and; topography; low energy ion scattering (LEIS)
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Structure of LaAlO3(0 0 1) surface has been investigated using low energy neutral scattering spectroscopy, where a chopped neutral He beam was incident on a surface and the scattered He atoms were detected by the time-of-flight technique, thereby avoiding the charging of the insulating surface. It is found that the surface is terminated with La-O layer at temperature of 1000 K and both La-O and Al-O-2 layers exist on the surface at RT. The other substrate, deoxidized well by prolonged annealing. was terminated mainly by the La-O layer at temperature of 1000 K and RT. The relaxations at the surface and deeper layer structure were analyzed. (C) 2001 Published by Elsevier Science B.V.
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