Universal magnetic excitation spectrum in cuprates

  title={Universal magnetic excitation spectrum in cuprates},
  author={John M Tranquada and Hyungje Woo and Toby G. Perring and Hideto Goka and Genda Gu and Guang-lei Xu and Mitsutaka Fujita and Kazuyoshi Yamada},
  • John M Tranquada, Hyungje Woo, +5 authors Kazuyoshi Yamada
  • Published 2004
  • Physics, Chemistry
  • Abstract We have recently used inelastic neutron scattering to measure the magnetic excitation spectrum of La 1.875 Ba 0.125 CuO 4 up to 200 meV. This particular cuprate is of interest because it exhibits static charge and spin stripe order. The observed spectrum is remarkably similar to that found in superconducting YBa 2 Cu 3 O 6+ x and La 2− x Sr x CuO 4 ; the main differences are associated with the spin gap. We suggest that essentially all observed features of the magnetic scattering from… CONTINUE READING