title: Magnetic fluctuations of stripes in the high temperature cuprate superconductors.
abstract: Within the time-dependent Gutzwiller approximation for the Hubbard model we compute the magnetic fluctuations of vertical metallic stripes with parameters appropriate for La(1.875)Ba(0.125)CuO(4) (LBCO). For bond- and site-centered stripes the excitation spectra are similar, consisting of a low-energy incommensurate acoustic branch which merges into a "resonance peak" at the antiferromagnetic wave vector and several high-energy optical branches. The acoustic branch is similar to the result of theories assuming localized spins whereas the optical branches are significantly different. Results are in good agreement with a recent inelastic neutron study of LBCO.
authors.affiliation: Institut für Physik, BTU Cottbus, Post Box 101344, 03013 Cottbus, Germany.
authors.forename: G
authors.initials: G
authors.lastname: Seibold
authors.forename: J
authors.initials: J
authors.lastname: Lorenzana