We observe enhancement of the superconducting transition temperature in heterostructures of superconducting oxides. Fabrication of multilayer thin films of $La_{2−x}Ce_{x}CuO_{4}$ (LCCO) and $Pr_{2−x}Ce_{x}CuO_{4}$ (PCCO) paired over-doped and under-doped (or un-doped) layers of various layer thicknesses. An increased $T_c$ was observed, significantly above that of single-phase films with dopings corresponding to the under- or over-doped layers. We report transport measurements on these mulitlayer films in order to investigate the mechanism of this $T_c$ enhancement. This work was supported by BSF Grant 2006385 and the Center for Nanophysics and Advanced Materials (CNAM).
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