Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 69: Electronic structure I
O 69.8: Vortrag
Donnerstag, 17. März 2011, 13:00–13:15, WIL C107
The electronic structure and Fermi surface of Ru(0001) and Ru(1010) surfaces measured with high resolution angle-resolved photoemission spectroscopy — •Thanh-Nam Nguyen1, Mattia Mulazzi1, Sina Gusenleitner1, Marius Ernst1, Holger Schwab1, Dirk Ehm3, and Friedrich Reinert1,2 — 1Experimentelle Physik 7, University of Würzburg, Am Hubland, 97074 Würzburg, Germany — 2Gemeinschaftslabor für Nanoanalytik, Karlsruhe Institute of Technology, Germany — 3Carl Zeiss SMT AG, Rudolf-Eber-Str. 2, 73447 Oberkochen, Germany
Single-crystalline Ru surfaces are model systems for the capping of optical elements in extreme ultraviolet (EUV) lithography setups. The momentum-resolved electronic structure of these surfaces yields important information on their chemical and catalytic properties. The Fermi surface and the band structure of two ruthenium surfaces Ru(0001) and, for the first time, Ru(1010) were investigated by high-resolution angle-resolved photoemission spectroscopy (ARPES). The experimental results, though consistent with previous data, show several new features that could not be previously observed by the limited energy and angular resolution. The present results provide detailed information about the momentum-resolved electronic structure of Ruthenium that constitutes a reference to understand its chemical and catalytic properties.