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1994 (1)
1Author    M. V. EreminRequires cookie*
 Title    Why is the Cu(2) Asymmetry Parameter of N Q R Spectra in HTSC so Small?  
 Abstract    An explanation has been proposed for the unusual behaviour of the asymmetry parameter of N Q R spectra of Cu(2) in layered cuprates. When holes are introduced into the plane, Zhang-Rice singlets (ZRS) appear which have a strong vibronic coupling to tetragonal and orthorhombic modes. The equation for the adiabatic potential has been derived. It is shown that its minimum, correspond­ ing to orthorhombic distortions of the oxygen plaquette around the Cu(2) ions, changes under doping to tetragonal character due to the singlet exchange coupling between copper and oxygen holes. A strong interaction of ZRS via the phonon field has been found. 
  Reference    Z. Naturforsch. 49a, 385—388 (1994); received August 17 1993 
  Published    1994 
  Keywords    N Q R, Singlet correlation, Adiabatic potential, Tetragonal mode, Phonon coupling 
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 TEI-XML for    default:Reihe_A/49/ZNA-1994-49a-0385.pdf 
 Identifier    ZNA-1994-49a-0385 
 Volume    49