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  • Springer  (8)
  • 1980-1984  (8)
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Year
  • 1
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    Photoelectron-spectroscopy investigation and electronic properties of LiNbO3 crystal surfaces (1980)
    Springer
    Details
    Publication Date: 1980-04-01
    Print ISSN: 0340-3793
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Published by Springer
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    PAPER CURRENT
  • 2
    Electronic Resource
    Electronic Resource
    Photoemissionsspektroskopie in Chemie und Physik (1981)
    Springer
    Naturwissenschaften 68 (1981), S. 360-370 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Notes: Abstract The principles of photoemission spectroscopy and of its application to problems in chemistry and physics are discussed. Examples will be presented for atoms, molecules, solids and surfaces. The following topics will be discussed: binding energies of core levels (rare gases), binding energies of valence levels (CO), analysis of a valence band spectrum in terms of MO-calculations (C6H6), core polarization (O2), chemical shift (O), plasmon excitations (Be-metal), energy dispersion relations for a solid (Cu), exchange splitting in a metal (Ni), surface states (Si), energy levels of adsorbates (Ni on Au, C6H6 on Ni).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01058025
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The XPS valence band spectra of NbC (1980)
    Springer
    The European physical journal 37 (1980), S. 27-31 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The x-ray photoemission valence band spectra of NbC have been measured and are compared with the x-ray emission spectra and with the results from band structure calculations. This comparison leads to a large enhancement of theC2 p photoabsorption cross section (atℏω=1,487 eV) compared to the value calculated for the free atom. The effect of the nonmetal vacancy in the valence band can be described very well with vacancy cluster calculations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01325500
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  • 4
    Electronic Resource
    Electronic Resource
    XPS valence bands of Ti, Zr, Nb, Mo and Hf (1981)
    Springer
    The European physical journal 42 (1981), S. 199-204 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The XPS valence band spectra of polycrystalline Ti, Zr, Nb, Mo and Hf have been measured with a resolution of 0.6 eV. The spectra were compared with theoretical densities of states. Good agreement is achieved if the partial densities of states are considered and a many body line shape function and life time broadening are taken into account. The sigularity index α determined at various core lines as well as the experimentally determined relative valence band cross sections are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01422023
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  • 5
    Electronic Resource
    Electronic Resource
    Bandstructure and atomic energy levels in Ce-Metal, NiO and NiS (1984)
    Springer
    The European physical journal 58 (1984), S. 1-6 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The results obtained by photoemission and inverse photoemission spectroscopy (PES and IPES) for compounds in which electron correlations are important such as Ce, NiO and NiS are compared to the Mott-Hubbard model. It can be shown that some interesting inconsistencies exist that emphasize the importance of hybridization. In the metallic phase of NiS the correlation energyU is large as compared to the 3d-bandwidth. Therefore the sulfur-nickel electron exchange seems to be an important mechanism in the conductivity of the compound.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01469431
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  • 6
    Electronic Resource
    Electronic Resource
    I. XPS study of 3d-metal ions dissolved in aluminium (1980)
    Springer
    The European physical journal 38 (1980), S. 191-199 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The core and valence band spectra of diluteAlMn,AlNi andAlCu alloys have been investigated by x-ray induced photoemission spectroscopy (XPS). The 2p levels of Mn and Cu inAlMn andAlCu change only slightly compared to their properties in the pure metals, whereas those of Ni inAlNi lose both their asymmetry and the two hole satellite. The 3s spectra of Mn inAlMn show a splitting of 2.9 eV, as compared to 4.3 eV in Mn metal. This indicates that inAlMn the Mn ion is magnetic, at least in the time scale of the XPS measurement. The valence band spectra of the alloys (and ofAlFe andAlCo) show virtual bound states with a width of about 1.5 eV and a distance relative to the Fermi energy which increases with increasingd-occupancy. The energy of the Al plasmons increase with increasingd-metal content.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01315657
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  • 7
    Electronic Resource
    Electronic Resource
    II. XPS study of 3d-metal ions dissolved in noble metals (1980)
    Springer
    The European physical journal 38 (1980), S. 201-209 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Valence and core level spectra ofAgMn,AuFe,AuCo,AuNi,CuFe,CuCo andCuNi will be reported. Clearly defined virtual bound states (vbs) can only be detected in the spin fluctuating systemsAuNi andCuNi. An increase in the density of states near the Fermi energy, in the region of the flats-p band of the host metal is observed in the other magnetic alloys. There are indications that a large hybridization between the impurity and the host metald-electrons exist. The impurity core levels show satellites. They can originate from the emission from real isolated impurities and from many body effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01315658
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  • 8
    Electronic Resource
    Electronic Resource
    Photoelectron-spectroscopy investigation and electronic properties of LiNbO3 crystal surfaces (1980)
    Springer
    Applied physics 21 (1980), S. 345-352 
    Details
    ISSN: 1432-0630
    Keywords: 71.20 ; 71.55 ; 73
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The electronic properties of Ar-ion and electron bombarded single-crystal surfaces of LiNbO3 have been investigated at room temperature by ultraviolet photoelectron spectroscopy (UPS) and x-ray excited photoelectron spectroscopy (XPS). In crystals reduced in this way, the loss of oxygen is accompanied with a loss of lithium and the creation of Nb4+ and Nb3+ ions. The relative concentrations of the various defects have been determined from their corresponding XPS core line spectra. When surface defects are produced an emission in the region of the bulk band gap appears. This gap emission is identified as arising from Nb 4d electrons due to the reduction of Nb5+ ions to Nb4+ and Nb3+ ions. The different behaviour of the gap emission upon surface treatment in the UPS and the XPS spectra is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00895926
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