Auflistung nach Schlagwort "electron diffraction"

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  • Depinning transitions between adsorbate chains coupled by Friedel oscillations 
    Godzik, G.; Block, T.; Pfnür, Herbert (College Park, MD : American Physical Society, 2003)
    The low coverage phase transitions of the p(8×1) and the p(5×1) chain structures of the Sr/Mo(112) system have been investigated with low-energy electron diffraction (LEED) at constant coverages. It turns out that both ...
  • Ordering and phase diagrams of xenon adsorbed on thin epitaxial NaCl(100) films and on Ge(100) 
    Schwennicke, C.; Schimmelpfennig, J.; Pfnür, Herbert (College Park, MD : American Physical Society, 1993)
    An adsorption study of Xe on both the bare Ge(100) surface, as well as on thin NaCl films grown pseudomorphically on Ge(100), was carried out using high-resolution low-energy electron diffraction. Ordered phases and phase ...
  • Restructuring of the Ge(100) surface by Na chains 
    Ernst, Wolfgang; Jonas, K.-L.; von Oeynhausen, V.; Tegenkamp, Christoph; Pfnür, Herbert (College Park, MD : American Physical Society, 2003)
    The Na-induced surface structures on Ge(100) at concentrations below 0.1 monolayer (ML) have been investigated with low-energy electron diffraction and with scanning tunneling microscopy (STM). Annealing and partial ...
  • Step and kink correlations on vicinal Ge(100) surfaces investigated by electron diffraction 
    Tegenkamp, Christoph; Wollschläger, Joachim; Pfnür, Herbert; Meyer zu Heringdorf, Frank-J.; Horn-von Hoegen, Michael (College Park, MD : American Physical Society, 2002)
    Using spot profile analysis in low-energy electron diffraction, we have investigated vicinal Ge(100) surfaces, which were miscut by 2.7° and 5.4°, respectively, in [011] direction with respect to the surface normal. Within ...
  • Structural modifications of quasi-one-dimensional submonolayers by impurity doping 
    Godzik, G.; Block, T.; Pfnür, Herbert (College Park, MD : American Physical Society, 2004)
    In this study, carried out by analysis of intensities and spot profiles in low energy electron diffraction, we investigated the influence of electronegative oxygen atoms as dopants on the long range order, the thermal ...
  • A vitrifying structure transition in the Dy/Mo(112) adsorption system 
    Fedorus, A.; Koval, V.; Naumovets, A.; Pfnür, Herbert (College Park, MD : American Institute of Physics, 2001)
    Annealing-driven irreversible structural transitions are studied by low-energy electron diffraction in submonolayer Dy films adsorbed on the Mo(112) surface. In a wide coverage range θ>0.07, Dy overlayers deposited at low ...