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Your search keyword '"Solovev, Sergey"' showing total 2 results
Start Over Author "Solovev, Sergey" Publisher american association for the advancement of science
2 results on '"Solovev, Sergey"'

1. Electron-induced oxygen desorption from the Ti[O.sub.2](011)-2x1 surface leads to self-organized vacancies

Author

Dulub, Olga, Batzill, Matthias, Solovev, Sergey, Loginova, Elena, Alchagirov, Alim, Madey, Theodore E., and Diebold, Ulrike

Subjects
Thermal desorption -- Analysis, Oxygen -- Chemical properties, Oxygen -- Analysis, Electrons -- Chemical properties, Electrons -- Analysis, Scanning tunneling microscopy -- Usage, Titanium dioxide -- Chemical properties, Titanium dioxide -- Analysis
Published
2007

2. Electron-Induced Oxygen Desorption from the Ti02(011)-2x1 Surface Leads to Self-Organized Vacancies.

Author

Dulub, Olga, Batziu, Matthias, Solovev, Sergey, Loginova, Elena, Alchagirov, Alim, Madey, Theodore E., and Diebotd, Ulrike

Subjects
*LOW energy electron diffraction, *ELECTRONS, *TITANIUM dioxide, *OXYGEN, *SCANNING tunneling microscopy, *NUCLEAR cross sections, *ELECTRONIC excitation, *PROBABILITY theory, *ATOMS
Abstract

When low-energy electrons strike a titanium dioxide surface, they may cause the desorption of surface oxygen. Oxygen vacancies that result from irradiating a TiO2(011)-2x1 surface with electrons with an energy of 300 electron volts were analyzed by scanning tunneling microscopy. The cross section for desorbing oxygen from the pristine surface was found to be 9 (±6) x 10-17 square centimeters, which means that the initial electronic excitation was converted into atomic motion with a probability near unity. Once an O vacancy had formed, the desorption cross sections for its nearest and next-nearest oxygen neighbors were reduced by factors of 100 and 10, respectively. This site-specific desorption probability resulted in one-dimensional arrays of oxygen vacancies. [ABSTRACT FROM AUTHOR]

Published
2007
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