Anisotropy in the electronic screening of oxygen lattice modes in YBa(2)Cu(3)O(6.95)

R. J. McQueeney, T. Egami, J. -H. Chung +7

Inelastic neutron scattering data from a twinned single-crystal of YBa2Cu3O6.95 are presented that show a distinct a-b plane anisotropy in the oxygen vibrations. The Cu-O bond-stre…