ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 71.20  (2)
  • 71.10.+x  (1)
  • 79.60Cn  (1)
  • Springer  (4)
Collection
Keywords
Publisher
  • Springer  (4)
Years
  • 1
    Electronic Resource
    Electronic Resource
    Bichromatic two-photon photoemission spectroscopy of image potential states on Ag(100) (1990)
    Springer
    Applied physics 51 (1990), S. 322-326 
    Details
    ISSN: 1432-0630
    Keywords: 73.20At ; 79.60Cn ; 79.20Ds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Bichromatic two-photon photoemission spectroscopy (Bi2PPES) leads to an increased signal-to-noise ratio compared to conventional two-photon photoemission spectroscopy and therefore allows the observation of the first four image potential states as well as a lineshape analysis with improved accuracy on Ag(100). The n=2 image state with a measured linewidth of 37 meV FWHM is the narrowest unoccupied structure measured on any solid surface so far. The intrinsic linewidths of the first two image states were determined as 21±4 meV and 5±5 meV, respectively, in reasonable agreement with theoretical calculations. Disordered adsorption of oxygen on Ag(100) leads to a linewidth broadening of the first and — to a lesser extent — of the second image potential state. A quantitative analysis of the broadening suggests that the underlying mechanism is lifetime shortening due to scattering of the image state electrons by the adsorbate atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324312
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Isochromat spectroscopy using SXAPS equipment (1979)
    Springer
    Applied physics 20 (1979), S. 37-40 
    Details
    ISSN: 1432-0630
    Keywords: 71.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Any conventional soft x-ray appearance potential spectrometer may be converted to an isochromat spectrometer by placing an absorber foil of suitably chosen thickness in front of the x-ray detector. In the present work, we demonstrate the principle and work out in detail the properties of an aluminum absorption foil. Isochromats of a hafnium sample are compared to results obtained with a crystal x-ray spectrometer. Also, the equivalence of an isochromat and an SXAPS measurement at the same energy will be shown. The densities of unoccupied states as derived from the respective experiments are in pretty good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00901784
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Deconvolution of appearance potential spectra II (1979)
    Springer
    Applied physics 20 (1979), S. 299-303 
    Details
    ISSN: 1432-0630
    Keywords: 71.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We have recently introduced a new method for the inversion of autoconvolution integrals [1]. In this paper, we describe an improvement of the previous algorithm which results from the consequent use of cubical spline functions. The treatment given here is mathematically more consistent and offers better numerical stability than that given earlier. The method is applied to the deconvolution of the rather narrow NiL III appearance potential line. Problems of stability and error propagation are discussed in some detail.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00895000
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Electronic quasiparticle structure of ferromagnetic bcc iron (1995)
    Springer
    The European physical journal 96 (1995), S. 357-372 
    Details
    ISSN: 1434-6036
    Keywords: 71.10.+x ; 71.27.+a ; 75.10.Lp ; 75.50.Bb
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We investigate the influence of electron correlations on the temperature-dependence of the electronic structure of ferromagnetic bcc iron by use of a manybody evaluation of a generalized model of magnetism. The single-particle part of the model-Hamiltonian is taken from an LDA band structure calculation. The manybody interactions are described by only two parameters, an intraband Coulomb interactionU and an interband exchangeJ. WithU=1.8 eV andJ=0.2 eV the self-consistent model solution yields aT=0 moment of about 2.04 µB and a Curie-temperature of 1044K. Details of the magnetic behaviour of Fe can be traced back to a striking temperature variation of the quasiparticle density of states. A novel explanation for the experimentally-observed non-collapsing exchange splitting is demonstrated in terms of the temperature-dependent spectral density for wave-vectors near the Γ-point. Typical differences in the magnetic behaviour of Fe and Ni are worked out.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01313058
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...