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  • 75.50.Kj  (1)
  • PACS. 78.20.-e Optical properties of bulk materials and thin films - 74.72.Jt Other cuprates  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Magnetic resonance in pure and diamagnetically diluted spin-Peierls CuGeO3 (1996)
    Springer
    JETP letters 64 (1996), S. 305-311 
    Details
    ISSN: 1090-6487
    Schlagwort(e): 76.50.+g ; 75.50.Kj ; 75.30.G
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Magnetic resonance at frequencies 22–75 GHz is investigated in pure single-crystalline CuGeO3 in the temperature range 1.2–25 K. At temperatures below 4 K the magnetic resonance line splits into four spectral components. The line close to the ESR of the paramagnetic phase is associated with impurities or defects. The other three lines have the same intensity in different samples and are apparently characteristic for pure single crystals at low temperature. An antiferromagnetic resonance with two resonance absorption branches and a spectrum characteristic for an antiferromagnet with easy, average, and hard anisotropy axes was observed and investigated in the Néel compound Cu0.98Zn0.02GeO3 with diamagnetic dilution of the spin subsystem.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1134/1.567188
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Temperature dependence of the anisotropic electrodynamics in the ladder compounds (1998)
    Springer
    The European physical journal 6 (1998), S. 301-305 
    Details
    ISSN: 1434-6036
    Schlagwort(e): PACS. 78.20.-e Optical properties of bulk materials and thin films - 74.72.Jt Other cuprates
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract: The optical reflectivity as a function of temperature of the title compound for x =0, 5 and 12 has been measured over a broad spectral range from 4 meV up to 12 eV. Our findings suggest a very anisotropic dynamics of the charge excitation spectrum when measuring along or perpendicular to the ladders. Moreover, a metal-insulator transition develops at low temperatures, leading to a suppression of Drude spectral weight in the far and mid-infrared spectral range. We identify this behaviour as a consequence of the localization effects for small Ca substitution, and of the possible formation of a charge density wave condensate for large Ca substitution.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s100510050552
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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