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Resistivity saturation in an electron-doped cuprate

TitleResistivity saturation in an electron-doped cuprate
Publication TypeJournal Article
Year of Publication2021
AuthorsN. R. Poniatowski, T. Sarkar, S. Das Sarma, and R. L. Greene
JournalPhys. Rev. B
Date Publishedjan

We report the observation of resistivity saturation in lightly doped (x = 0.08) as-grown samples of the electron-doped cuprate La2-xCexCuO4. The saturation occurs at resistivity values roughly consistent with the phenomenological Mott-Ioffe-Regel criterion once the low effective carrier density of these materials is included in the analysis. These results imply that, at least for light doping, the high-temperature metallic phase of these materials is not necessarily strange and may be understood as simply a low-density metal.