Electron Correlations in Narrow Energy Bands
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منابع مشابه
Variational Approach to Finite-temperature Magnetism in the Degenerate Narrow Bands
The variational approach which describes the local electron correlations at finite temperatures has been extended to the degenerate-band case. It reduces Tc in the static approximation by a factor of two, gives realistic Tc between the observed value Tc (Obs) and 2Tc (Obs) , and suppresses the temperature independent charge fluctuation in Fe and Ni. The finite-temperature theories of magnetism ...
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