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  • 78.20.Ls  (1)
  • ACAR  (1)
  • Scientific Community, Science and Policy
  • Springer  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Ellipsometric measurement of magnetooptical nonreciprocal effects (1986)
    Springer
    Applied physics 39 (1986), S. 15-18 
    Details
    ISSN: 1432-0649
    Keywords: 07.60.Fs ; 78.20.Ls ; 42.60.-v
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract To detect small rotation rates with a ring laser the two counter-propagating beams must be uncoupled. This lock-off can be realized using nonreciprocal optical effects yielding different optical path lengths for the two waves. Usually magnetooptical effects are employed for nonreciprocity. To measure, instead of calculating from optical constants, the magnitude of this nonreciprocal effects an ellipsometric method is proposed. Lock-off elements using Faraday or Kerr effect (polar and transverse, respectively) are treated. First measurements were made on FeNi films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695587
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Influence of doping on the electronic structure of (La, Sr)2CuO4 (1994)
    Springer
    Journal of superconductivity 7 (1994), S. 169-173 
    Details
    ISSN: 1572-9605
    Keywords: La2−x Sr x CuO4 ; positron annihilation ; ACAR ; Fermi surface ; Sr doping ; electronic structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology , Physics
    Notes: Abstract High-statistics (〉4 × 108 counts), room-temperature measurements of the electron-positron momentum density of La2−x Sr x CuO4 have been performed for samples with Sr concentrations of x=0.0, 0.1, 0.13, and 0.2. These spectra have been analyzed in conjunction with theoretical calculations of the electron-positron momentum density. The metallic samples show features consistent with the presence of a Fermi surface, but its evolution with increasing Sr concentration does not follow the predictions of band theory. These results may indicate the effects of electron-electron correlation on the electron momentum distribution in the Cu-O plane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00730389
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    Paper (German National Licenses)
    Fulltext
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