Electron doping of cuprates via interfaces with manganites

ORAL

Abstract

The possible electron doping of some undoped high-$T_c$ cuprates via the transfer of charge from undoped manganites (or other oxides) using heterostructure geometries is discussed theoretically [1]. An analysis of photoemission and diffusion voltage experiments locate the Fermi level of some manganites above the bottom of the upper Hubard band of some cuprate parent compounds. The addition of electrons to antiferromagnetic Cu oxides may lead to a superconducting state at the interface with minimal quenched disorder. Model calculations support this view. [1] S. Yunoki et al., Phys. Rev. B {\bf 76}, 064532 (2007) and references therein.

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Authors

  • Elbio Dagotto

    • Department of Physics and Astronomy, The University of Tennessee and Materials Science and Technology Division, Oak Ridge National Laboratory

  • Satoshi Okamoto

    • Materials Science and Technology Division, Oak Ridge National Laboratory

  • Seiji Yunoki

    • Department of Physics and Astronomy, The University of Tennessee and Materials Science and Technology Division, Oak Ridge National Laboratory

  • Adriana Moreo

    • Department of Physics and Astronomy, The University of Tennessee and Materials Science and Technology Division, Oak Ridge National Laboratory

  • Srivenkateswara Kancharla

    • Materials Science and Technology Division, Oak Ridge National Laboratory

  • Atsushi Fujimori

    • Department of Physics, University of Tokyo