Summary: High-energy spin excitations in YBa2Cu3O6.5
P. Bourges
Laboratoire Le´on Brillouin, CEA-CNRS, CE Saclay, 91191 Gif sur Yvette, France
H. F. Fong
Department of Physics, Princeton University, Princeton, New Jersey 08544
L. P. Regnault
CEA Grenoble, De´partement de Recherche Fondamentale sur la Matie`re Condense´e, 38054 Grenoble cedex 9, France
J. Bossy
Institut Laue-Langevin, 156X, 38042 Grenoble Cedex 9, France
C. Vettier
European Synchrotron Research Facility, BP 220, 38043 Grenoble Cedex, France
D. L. Milius and I. A. Aksay
Department of Chemical Engineering, Princeton University, Princeton, New Jersey 08544
B. Keimer
Department of Physics, Princeton University, Princeton, New Jersey 08544
Received 27 August 1997
Inelastic neutron scattering has been used to obtain a comprehensive description of the absolute dynamical
spin susceptibility (q, ) of the underdoped superconducting cuprate YBa2Cu3O6.5 (Tc 52 K over a wide
range of energies and temperatures 2 meV 120 meV and 5 K T 200 K . Spin excitations of two
distinct symmetries even and odd under the exchange of two adjacent CuO2 layers are observed which exhibit

Source: Aksay, Ilhan A. - Department of Chemical Engineering, Princeton University

Collections: Materials Science