Effects of hydrogen on the dynamics of the Mo{sub 0.95}Re{sub 0.05}(ll0) surface

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The effect of adsorbed H on the Mo{sub 0.95}Re{sub 0.05}(110) surface has been investigated. Results obtained from low-energy electron diffraction, high-resolution electron energy loss spectroscopy (HREELS) and angle-resolved ultra-violet photoemission spectroscopy are presented. A (2{times}2) LEED pattern is observed for H coverages around {Theta} {approximately} 0.6 ML and is attributed to reconstruction of the substrate. At higher coverages, a (1{times}1) pattern is observed. Two peaks are observed at loss energies of 99 and 153 meV in the HREELS spectra for the H-saturated Mo{sub 0. 95}Re{sub 0.05}(110) surface. Both peaks show an isotopic shift, confirming that they are due to hydrogen ... continued below

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17 p.

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Okada, M.; Plummer, E. W.; Baddorf, A. P. & Zehner, D. M. August 1995.

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The effect of adsorbed H on the Mo{sub 0.95}Re{sub 0.05}(110) surface has been investigated. Results obtained from low-energy electron diffraction, high-resolution electron energy loss spectroscopy (HREELS) and angle-resolved ultra-violet photoemission spectroscopy are presented. A (2{times}2) LEED pattern is observed for H coverages around {Theta} {approximately} 0.6 ML and is attributed to reconstruction of the substrate. At higher coverages, a (1{times}1) pattern is observed. Two peaks are observed at loss energies of 99 and 153 meV in the HREELS spectra for the H-saturated Mo{sub 0. 95}Re{sub 0.05}(110) surface. Both peaks show an isotopic shift, confirming that they are due to hydrogen vibrational modes and a quasi-trigonal adsorption site is consistent with these observations. A two dimensional Fermi surface was determined for the H-saturated Mo{sub 0.95}Re{sub 0.05}(110) surface. The Fermi-surface nesting vector was observed at the place where theoretical calculations predict it to occur on H-saturated Mo(110) and it may be related to the phonon anomaly observed for this surface.

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17 p.

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OSTI as DE96005628

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  • International symposium on dynamical quantum processes on solid surfaces, Osaka (Japan), 20-22 Sep 1995

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  • Other: DE96005628
  • Report No.: CONF-9509312--1
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 205079
  • Archival Resource Key: ark:/67531/metadc663969

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  • August 1995

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  • June 29, 2015, 9:42 p.m.

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  • May 2, 2016, 3:46 p.m.

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Okada, M.; Plummer, E. W.; Baddorf, A. P. & Zehner, D. M. Effects of hydrogen on the dynamics of the Mo{sub 0.95}Re{sub 0.05}(ll0) surface, article, August 1995; Tennessee. (digital.library.unt.edu/ark:/67531/metadc663969/: accessed December 14, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.