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Electron-electron interaction and localization in d and f transition metals

Physical Review B, ISSN: 0163-1829, Vol: 37, Issue: 18, Page: 10674-10684
1988
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We discuss, for the d and f transition metals, the competition between atomiclike electrostatic Coulomb and exchange interactions and loss of atomic characteristics in the solid through screening of f and d charge fluctuations and hybridization. We derive semiempirical relations describing these interactions for the 3d, 4d, 5d, 4f, and 5f elements in the environment of a metallic host. We then compare these to the hybridization widths, also semiempirically determined, and arrive at conclusions concerning the localization of the d or f electrons and the formation of magnetic moments. We show that some of the light actinides can exhibit negative Ueff behavior dependent on their valence in the solid. We argue that some d transition metals may belong to the same group if properly alloyed. © 1988 The American Physical Society.

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