Theory of the Resonant Neutron Scattering of High $T_c$ Superconductors

Eugene Demler, Shou-Cheng Zhang

Recent polarized neutron scattering experiments on $YB{a}_{2}C{u}_3{O}_7$ have revealed a sharp spectral peak at the $(\pi ,\pi )$ in reciprocal lattice centered around the energy transfer of…