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Universal magnetic excitation spectrum in cuprates
J. M. Tranquada, H. Woo, T. G. Perring +5
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 bec…
Neutron scattering study on La1.9Ca1.1Cu2O6+delta and La1.85Sr0.15CaCu2O6+delta
M. Huecker, Young-June Kim, G. D. Gu +3
We present neutron scattering data on two single crystals of the high temperature superconductor La2-x(Ca,Sr)xCaCu2O6+delta. The Ca0.1-doped crystal exhibits a long-range antiferro…
Stripe order, depinning, and fluctuations in LaBaCuO and LaBaSrCuO
M. Fujita, H. Goka, K. Yamada +2
We present a neutron scattering study of stripe correlations measured on a single crystal of LaBaCuO. Within the low-temperature-tetragonal (LTT) phase, s…
Interplay of structural and electronic phase separation in single crystalline La(2)CuO(4.05) studied by neutron and Raman scattering
V. P. Gnezdilov, Yu. G. Pashkevich, J. M. Tranquada +7
We report a neutron and Raman scattering study of a single-crystal of La(2)CuO(4.05) prepared by high temperature electrochemical oxidation. Elastic neutron scattering measurements…
Quantum Magnetic Excitations from Stripes in Copper-Oxide Superconductors
J. M. Tranquada, H. Woo, T. G. Perring +5
In the copper-oxide parent compounds of the high-transition-temperature superconductors, the valence electrons are localized, one per copper site, due to strong intraatomic Coulomb…