When a cuprate parent compound is doped with electrons, the resulting phase diagram is reminiscent to that of their hole doped cousins, with several important caveats. The extended antiferromagnetic phase coincides with superconductivity, and the maximum Tc is three times smaller in single-layered materials, while the linear-in-T resistivity which demarcates the overdoped hole-doped cuprates is, too, constrained to lower temperatures. These differences coupled with the stronger antiferromagnetic order in electron-doped cuprates provides a means to explore which behaviours are spin and which are strange.

Here, I will discuss magnetotransport experiments on combinatorial thin films of the electron-doped cuprate La2-xCexCuO4 (LCCO), which allow for unprecedented systematic measurements across a wide range of the phase diagram (x=0.116 – 0.188). Through computational simulations, the quasiparticle scattering rate of these materials is elucidated, and found to be strongly dominated by antiferromagnetic spin fluctuations. This scattering rate is directly tied to Tc, demonstrating that spin fluctuations mediate superconductivity in electron-doped cuprates. The transport results raise several questions, which I will address.