OPTIMIZED-EFFECTIVE-POTENTIAL METHOD WITH EXACT EXCHANGE AND EXACT RPA CORRELATION-3D METALS

We present a new density-functional method of the self-consistent elec tronic-structure calculation. We use the exchange-correlation energy w hich consists of the exact exchange and the correlation energies in th e random-phase approximation. For 3d metals, it is shown that the corr elation potential gives rise to a large contribution which has the opp osite sign to the exchange potential. Resulting eigenvalue dispersions and the magnetic moments are very close to those of LDA's and the exp eriments. (C) 1998 Elsevier Science B.V. All rights reserved.