By F. J. Himpsel (auth.), Professor Dr. Hans-Joachim Freund, Professor Dr. Eberhard Umbach (eds.)
Adsorption on Ordered Surfaces of Ionic Solids and skinny motion pictures introduces to a brand new and topical box of floor technological know-how for which relatively little adventure is out there at the moment. It reports the new result of the hired analytical tools comprising all smooth floor strategies together with scanning tunneling microscopy and diverse varieties of electron spectroscopies. the current prestige of this new, truly outlined box of floor technology is almost thoroughly overviewed by way of contributions from many of the examine teams lively during this box. The publication is intended as a foundation for the anticipated swift improvement during this zone with purposes in catalysis, thin-film and semiconductor know-how, sensors, electrochemistry, managed coaching of ultrathin epitaxial surfaces, and interfaces of insultors in addition to destiny molecular electronics.
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Extra info for Adsorption on Ordered Surfaces of Ionic Solids and Thin Films: Proceedings of the 106th WE-Heraeus Seminar, Bad Honnef, Germany, February 15–18, 1993
The emisSion current of the electron gun was minimized to reduce electron beam damage. The simultaneous use of FTIR. and SPA-LEED was not possible, but the experimental conditions (T, p(C~» were kept comparable. 3. 1 CO Adsorhed on NaCI(100) Spectra of CO at natural abundance adsorbed on NaCI(IOO) at monolayer coverage were observed in the temperature range between 55 and 6 K. Details on the monolayer preparation and experimental conditions are given in [6-8]. Typical spectra of the monolayer COlNaCI(lOO) as a function of temperature are shown in Fig.
Umbach: Surf. Sci. W. L. Pollack: Phys. Rev. E. B. Webb: Surf. Sci. Electronic Properties of Physisorbates on Epitaxial NaCl(lOO) Layers: SF6, Xe, and C02 A. Klekamp, R. ReijJner, and E. Umbach· Physikalisches Institut, Universitlit Stuttgart, Pfaffenwaldring 57, 0-70569 Stuttgart 80, Germany * new address: Experimentelle Physik n, Universitlit Wtirzburg, Am Rubland, 0-97074 Wtirzburg, Germany. Abstract. Ultrathin epitaxial NaCI(IOO) films on Ge(IOO) are ideally suited for adsorption studies on insulators using conventional surface techniques.
Three double layers. Xenon was admitted to the vacuum chamber through a variable leak valve. Adsorption experiments were performed in quasi equilibrium with a 3D room temperature gas. Xe pressure was measured using an ion gauge. 3. 1 Morphology of Thin NaCI Films In order to determine the morphology of the NaCl films, step distributions and terrace widths we analyzed spot profiles of the (00) beam of evaporated and annealed NaCl films at euerej,::;s between 42 eV and 170 eV. The profiles produced in this way are broadened and show satellites but are isotropic.