Non-universal spectroscopic and transport properties across the superconducting dome of a n-type cuprate La_2-xCe_xCuO₄

Since the discovery of cuprate superconductors, research has focused more on the hole-doped side, while comprehensive studies on the electron-doped counterparts are lacking. Using reactive oxide molecular beam epitaxy, we synthesized high quality T'-La_2-xCe_xCuO₄ thin films with wide doping range covering the entire superconducting dome. Combining transport and in-situ. synchrotron-based ARPES (angle-resolved photoemission spectroscopy) measurement, we performed systematic investigation of the microscopic relations between the electronic structures and superconductivity. A more detailed phase diagram is constructed based on temperature dependence of resistivity, anti-ferromagnetic order strength, and key parameters of ARPES spectra. Our results based on this thin film platform allow direct comparison between n- and p-type cuprates, and set up the basis for understanding the underlying mechanisms of high-Tc superconductivity in the future.