Absence of an isotope effect in the magnetic resonance in high-$T_c$ superconductors

S. Pailhès, P. Bourges, Y. Sidis +4

An inelastic neutron scattering experiment has been performed in the high-temperature superconductor $\mathrm{YB}{\mathrm{a}}_2\mathrm{C}{\mathrm{u}}_3{\mathrm{O}}_{6.89}$ to search for an oxygen-isotope shift of the well-known…