STM Study of Bosonic Modes in the Cuprate Superconductor Pr$_{0.88}$LaCe$_{0.12}$CuO$_{4}$

We use a low temperature (4 K) ultra-high vacuum scanning tunneling microscope (STM) to investigate the electron-doped high temperature superconductor Pr$_{0.88}$LaCe$_{0.12}$CuO$_{4}$ (PLCCO). We examine the superconducting gap and the satellite features identified as bosonic modes. We investigate these modes with increasing oxygen reduction which represents the third dimension in the electron-doped superconducting phase diagram. We relate our findings to neutron scattering results performed on the same sample.