F.J. Himpsel, T.A. Jung, et al.
Surface Review and Letters
We have investigated the room-temperature phonon density of states for several compounds in the YBa2Cu3Ox family using inelastic neutron scattering. Substantial variations are observed as a function of oxygen concentration, across the entire frequency range (0-90 meV). Near the high frequency cut-off, the spectral weight of the distribution shifts upwards by ≈ 10 meV, between x = 7.0 and x = 6.0. This shift is tentatively ascribed to enhanced electron-phonon coupling in the superconducting compound. Our interpretation is substantiated by complementary data on a non-superconducting Co-doped sample. © 1988.
F.J. Himpsel, T.A. Jung, et al.
Surface Review and Letters
Revanth Kodoru, Atanu Saha, et al.
arXiv
D.D. Awschalom, J.-M. Halbout
Journal of Magnetism and Magnetic Materials
A. Ney, R. Rajaram, et al.
Journal of Magnetism and Magnetic Materials