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Intra- and Interatomic Electron Correlation in an Orbitally Nondegenerate Narrow Band

✍ Scribed by E. Heiner; J. Schneider; W. Haubenreisser


Publisher
John Wiley and Sons
Year
1973
Tongue
English
Weight
332 KB
Volume
55
Category
Article
ISSN
0370-1972

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✦ Synopsis


Abstract

The influence of interatomic interaction between the electrons on the occurrence of ferro‐magnetism in a nondegenerate narrow band is investigated. Using the Green's function technique it is shown that the unperturbed band splits due to the interatomic interaction into spin‐polarized sub‐bands. For a simple cubic tight‐binding band the ground state energy for the paramagnetic and ferromagnetic configurations are calculated and compared. It is found that in the strongly correlated limit and for sufficiently large number of electrons per atom the ferromagnetic state is stable.


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Inelastic X-ray scattering measurements in aluminum are analyzed using first principles dynamical density response calculations including band structure. Band structure effects are shown to be important; significant effects include shifts of spectral features to lower energies and the presence of hi