Electronic Structure of Highly Correlated Structures
نویسنده
چکیده
Threedifferent butrelated problemsam discussed inthiscontribution, allrelated to theso.called Anderson, Hubbard,and t-J Hamiltonians -theprototype Hamiltonians forsystemswithhighlycorrelated lectrons: (1)The relationship -basedon thewell known canonical (Schrieffer-Wolff) transformation --.betweentheAndersonmodel(inthe small.hybridization and large.Coulomb-interaction regime) and the local moment, the Kondo, the Hubbard and the t -J models, in particular the phenomena of rare-earth magnetism, intermediate valence, and heavy fermions; (2) The exact solution of these Hamiltonians in the periodic small-cluster approximation and Me conditions for the existence of the heavy-fermtoa phenomenon; (3) The metamagnetic transition in heavy-fermion systems,
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تاریخ انتشار 2005