Self-Consistent Mean-Field Theory for Interacting Electrons in Three-Dimensional Deformable Lattice

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概要

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• The ground state properties are investigated of a three-din?ensional many-electronsystem with short range electron-electron (e-e) repulsion U, site diagonal electron-Rat-lice (e-L) interaction S and half of the unperturbed electronic band width T. Being thesystem considered as a random four-component alloy with respect to the effectivepotential for spin up or down electrons and treating the lattice classically, it is possi-ble to calculate ground state properties for any values of parameters: T, U, S and theelectron number, With obtaiuted phase diagrams in the T - U - S triangle, we discussa variety of possible phases, local spin- and charge-densities, phase transitions, bandgap width of insulating phase and structural change. The difference in the half-filledelectron case and non-half-filled cases is also discussed in cccnnection with the elec-Iron-hole symmetry and the different role of e-e and e-l, interactions in metal-insulator transition.

• 社団法人日本物理学会の論文
• 1987-12-15

著者

• Shinozuka Yuzo

  Department Of Applied Science Faculty Of Engineering Yamaguchi University

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