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Electron-Doped Superconductivity in CuO2 Layered Compounds with Nd2CuO4− structure

Published online by Cambridge University Press:  21 February 2011

H. Takagi,
T. Ito,
H. Matsubara,
H. Watabe,
T. Ido,
Y. Tokura and
S. Uchida
H. Takagi
Affiliation:
Engineering Research Institute, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113, Japan
T. Ito
Affiliation:
Engineering Research Institute, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113, Japan
H. Matsubara
Affiliation:
Engineering Research Institute, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113, Japan
H. Watabe
Affiliation:
Engineering Research Institute, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113, Japan
T. Ido
Affiliation:
Engineering Research Institute, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113, Japan
Y. Tokura
Affiliation:
Department of Physics, University of Tokyo, Hongo, Tokyo 113, Japan
S. Uchida
Affiliation:
Engineering Research Institute, University of Tokyo, Yayoi, Bunkyo-ku, Tokyo 113, Japan
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Abstract

We have discovered 24 K-superconductivity in a family of compounds Ln2−xCexCuO4−y (Ln=Pr, Nd, Sm). Novel feature of the superconductivity in these family of compounds is that superconductivity is produced by electron-doping in sharp contrast with high-Tc cuprates discovered so far. The effect of doping on physical properties particularly the elecronic phase diagram and transport coefficients which indicate symmetry in many respects between electron- and hole- doping is described.

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References

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