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Gradient corrections in the exchange and correlation energy of an inhomogeneous electron gas
(1975-11/03)
A closed form expression for the coefficient Bxc which determines the first gradient corrections to the exchange and correction energy is derived. The exact expression is obtained from an approximation that includes the ...
Resistive anomalies at the critical point of isotropic ferromagnets
(1973-02/12)
The effect of spin fluctuations on electrical resistivity (T) is studied in a single-band model. It is shown that d(T)/dT varies as the magnetic specific heat for TTc as well as TTc and that both short-range and long-range ...