下記の通りコロキウムを企画致しました。講演者の方には、学生や分野の違う方にもわかるレベルから始めて下さるようにお願いしてあります。是非ともご参加下さいますよう、ご案内申し上げます。

The electronic structure and resistivity $\rho$ of the paramagnetic state are calculated. We find, using the elliptical approximation to the bare density of states (DOS), that $\rho$ is orders of magnitude too small to agree with experiment. This confirms that the bare DE model is inadequate as a model for CMR materials. The much larger value for $\rho$ calculated by Furukawa is found to be due to his Lorentzian approximation for the bare DOS. We also calculate the magnetic susceptibility $\chi$ of the paramagnetic state, working in the strong-coupling limit $J\rightarrow\infty$ and calculating all correlation functions appearing in the CPA Green function equations self-consistently. We find no transition to ferromagnetism for any $S$ and unphysical deviations from the Curie law at half-filling. The reasons for this failure of our approximation are identified and a modification is proposed which gives a transition to ferromagnetism for all $S$ and the correct Curie law behaviour of $\chi$ at half-filling.