@article{121071,
  author = {H. F. Fong and P. Bourges and Y. Sidis and L. P. Regnault and J. Bossy and A. Ivanov and D. L. Milius and I.A. Aksay and B. Keimer},
  title = {Effect of nonmagnetic impurities on the magnetic resonance peak in YBa2Cu3O7},
  abstract = { The magnetic excitation spectrum of a YBa2Cu3O7 crystal containing 0.5\% of nonmagnetic (Zn) impurities has been determined by inelastic neutron scattering. Whereas in the pure system a sharp resonance peak at E similar or equal to 40 meV is observed exclusively below the superconducting transition temperature T-c, the magnetic response in the Zn-substituted system is broadened significantly and vanishes at a temperature much higher than T-c. The energy-integrated spectral weight observed near q = (pi, pi) increases with Zn substitution, and only about half of the spectral weight is removed at T-c. },
  year = {1999},
  journal = {Physical Review Letters},
  volume = {82},
  pages = {1939-1942},
  month = {03/1999},
  isbn = {0031-9007},
  language = {eng},
}