期刊
SURFACE SCIENCE SPECTRA
卷 27, 期 2, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1116/6.0000172
关键词
epitaxial; Ru(0001); SiO2; Ru(0001); x-ray photoelectron spectroscopy (XPS)
资金
- E2CDA-NRI Program of the Semiconductor Research Corporation [2764.001, 2764.002, 2764.003]
- National Science Foundation (NSF) [170228]
- Air Force Office of Scientific Research (AFOSR) [FA9550-18-1-0063]
X-ray photoelectron spectroscopy (XPS) is used to analyze the chemistry of the Ru(0001) film surface and the Ru/SiO(2)interfacial region at different annealing conditions. The XPS spectra are collected under ultrahigh vacuum (base pressure of similar to 5 x 10(-10) Torr) condition using a SPECS electron spectrometer with a PHOIBOS 100 hemispherical energy analyzer and an XR 50 Al K(alpha)x-ray source (1486.67 eV). High-resolution spectra of O 1s, Ru 3d/C 1s, and Si 2p together with survey scans are presented. The presence of 1 x 1 low energy diffraction pattern, collected from a 950 degrees C Ar/H(2)step-annealed Ru(0001) sample, confirms the hexagonal periodicity of Ru(0001) surfaces.
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