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1992 (1)
1Author    S. Gärtner, H. Riesemeier, Y. Kitaoka, V. Müller, K. Lüders, E. Kaldis, S. RusieckiRequires cookie*
 Title    Cu-NQR Frequencies and Linewidths in High-T c Superconductors  
 Abstract    The Cu-NQR lines of various high-T c superconductors at the Cu(2) site appear between 15 and 40 MHz. There exists an experimental correlation showing that the NQR frequency increases with decreasing T c . By comparison, it can be concluded from these results that a formal valence state of the Cu ion around 2 + is favourable for superconductivity. All lines exhibit a strong broadening compared to Cu0 2 crystals, which is attributed to lattice modulations within the Cu0 2 layers. This effect also influences the temperature dependence of the linewidth in YBa 2 Cu 3 0 7 _ a . 
  Reference    Z. Naturforsch. 47a, 27—29 (1992); received August 3 1991 
  Published    1992 
  Keywords    NQR, Superconductivity, High-T c compounds, Resonance frequency, Linewidth 
  Similar Items    Find
 TEI-XML for    default:Reihe_A/47/ZNA-1992-47a-0027.pdf 
 Identifier    ZNA-1992-47a-0027 
 Volume    47