| Abstract |
We present a microscopical model to describe the simultaneous parato-
ferromagnetic and semiconductor-to-metal transition in electrondoped
EuO. The physical properties of the model are systematically
studied, whereas the main remark is on the interplay between
magnetic order and the transport properties. The theory correctly
describes detailed experimental features of the conductivity and of
the magnetization, obtained for EuO1-x or Gd-doped GdxEu1-x0.
In particular the doping dependence of the Curie temperature is
reproduced The existence of correlation-induced local moments on
the impurity sites is essential for this description. |
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