Preliminary Inelastic Neutron Scattering Results for the Magnetic Excitations in the Model Superconductor HgBa$_{2}$CuO$_{4+\delta }$*

HgBa$_{2}$CuO$_{4+\delta }$ has a simple crystal structure and possess the highest T$_{c}$ (97 K at optimal doping) among all the single-layer cuprates. In a significant breakthrough, we were able to grow large HgBa$_{2}$CuO$_{4+\delta }$ single crystals, enabling us to perform the first inelastic magnetic neutron scattering experiments on this model superconductor. We performed energy scans at ($\pi $,$\pi )$ and momentum scans at fixed energy at 10 K and above Tc. Our preliminary results include the observation of a 52 meV feature at ($\pi $, $\pi )$ that resembles the ``resonance'' found in other cuprates.