All in situ deposition and characterization of YBa2Cu3O7−x thin films by low-energy electron diffraction and low-energy ion scattering spectroscopy
- 7 June 1993
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 62 (23) , 3040-3042
- https://doi.org/10.1063/1.109132
Abstract
In an ultrahigh vacuum apparatus, c‐axis oriented YBa2Cu3O7−x (YBCO) thin films were deposited by an ozone‐assisted reactive coevaporation method and characterized by low‐energy electron diffraction (LEED) and low‐energy ion scattering spectroscopy (LEISS). A clean surface with crystal perfection within the top two monolayers was confirmed by LEED for the first time. LEISS analysis showed that this clean surface is terminated by Cu(1)‐O chains. These experiments also indicate that the oxygen pressure and the vacuum condition are one of the essential factors in keeping an outermost surface clean.Keywords
This publication has 15 references indexed in Scilit:
- In-Situ Surface Observation of C-Axis Oriented YBa2Cu3O7−x Thin Films by Leed, XPS and ISSMRS Proceedings, 1992
- Low-energy ion scattering spectroscopy observations of c-axis-oriented YBa2Cu3O7−x thin films: Effects of in-vacuum annealingApplied Physics Letters, 1991
- Scanning tunneling microscopy of the surface morphology of YBa2Cu3Ox thin films between 300 and 76 KApplied Physics Letters, 1991
- Atmospheric Deterioration of Clean Surface of Epitaxial (001)-YBaCuO Films Studied by Low-Energy Electron DiffractionJapanese Journal of Applied Physics, 1991
- Surface Analysis of C-Axis-Oriented YBa2Cu3O7-X Thin Films by QMS, XPS and LEED: Effects of In-Vacuum AnnealingJapanese Journal of Applied Physics, 1991
- Ion–solid interaction at low energies: Principles and application of quantitative ISSSurface and Interface Analysis, 1991
- Core-level changes induced by oxygen inPhysical Review B, 1991
- Temperature dependence of the local structure of with varying oxygen content: An x-ray-absorption studyPhysical Review B, 1989
- Oxidation states of Cu, Ba and Y in superconducting YBa2Cu3O7?xZeitschrift für Physik B Condensed Matter, 1988
- Angle-resolved photoemission studies of single-crystalPhysical Review B, 1988