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| Author | : Zahid Hussain |
| Publisher | : |
| Total Pages | : 508 |
| Release | : 1979 |
| Genre | : Transition metals |
| ISBN | : |
| Author | : |
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| Total Pages | : |
| Release | : 1980 |
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An important question regarding the technique of angle-resolved photoemission (ARP) is the extent to which it can be used to determine experimental valence-band dispersion relations E{sub i}({rvec k}) for single crystalline solids. In the case of the 3d and 4d transition metals, studies of copper, nickel, palladium, and silver, show that a model based on the assumption of direct interband transitions (direct-transition model) may be used, in conjunction with an appropriate final-state dispersion relation E{sub f}({rvec k}), to elucidate E{sub i}({rvec k}) for these materials along several high symmetry lines (primarily [Gamma][Lambda]L) in k-space. To answer this question more generally, we have undertaken an extensive study of the valence band structures of other transition metals along various k-space lines. To date, studies have been extended to the (111) faces of the 5d metals Pt and Au along with the Pt(100) ((5 x 20) surface structure) face, and the (110) and (100) faces of Ag. The experiments were all conducted at SSRL, using synchrotron radiation in the range 6 eV
| Author | : Wayne C. Tonjes |
| Publisher | : |
| Total Pages | : 248 |
| Release | : 2001 |
| Genre | : Chalcogenides |
| ISBN | : |
| Author | : |
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| Total Pages | : |
| Release | : 1978 |
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| ISBN | : |
The application of Angle-Resolved Photoelectron Spectroscopy (ARPES) to crystalline solids and the utilization of such studies to illuminate several questions concerning the detailed electronic structure of such materials, are discussed. Specifically, by construction of a Direct Transition (DT) model and the utilization of energy-dependent angle-resolved normal photoemission in the photon energy range 32 eV
| Author | : Paul Sherman Wehner |
| Publisher | : |
| Total Pages | : 248 |
| Release | : 1978 |
| Genre | : |
| ISBN | : |
| Author | : University Microfilms International |
| Publisher | : Ann Arbor, Mich. : University Microfilms International |
| Total Pages | : 712 |
| Release | : 1984 |
| Genre | : Reference |
| ISBN | : |
| Author | : |
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| Total Pages | : |
| Release | : 1977 |
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Photoemission energy distribution experiments on clean metal and adsorbate-covered surfaces were performed under ultrahigh vacuum conditions by using x-ray and ultraviolet photon sources in the laboratory as well as continuously-tunable, highly polarized synchrotron radiation obtainable at the Stanford Synchrotron Radiation Laboratory (SSRL). Studies focused on two general areas: cross-section modulation in the photoemission process was studied as a function of photon energy and orbital composition. Sharp decreases in intensity of the valence bands of several transition metals (i.e., Ag, Au, and Pt) are attributed to the radial nodes in the respective wave functions. Adsorbate photoemission studies of CO adsorbed on platinum single crystals have demonstrated a very high spectral sensitivity to the 4sigma and (1.pi. + 5sigma) peaks of CO at photon energies of 150 eV. Angle-resolved photoemission allowed determination of the orientation of CO chemisorbed on a Pt (111) or Ni(111) surface. Prelinimary results at high photon energies (approximately 150 eV) indicated scattering from the substrate which could yield chemisorption site geometries.
| Author | : Sara Riccò |
| Publisher | : |
| Total Pages | : 89 |
| Release | : 2018 |
| Genre | : |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 844 |
| Release | : 1984 |
| Genre | : Dissertations, Academic |
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| Author | : |
| Publisher | : |
| Total Pages | : 596 |
| Release | : 1979 |
| Genre | : Dissertation abstracts |
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